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Finding the Fourth Proportional to 86,565,859,666.90, 129,848,789,500.35 and 86,565,859,666.90

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Solution

The fourth proportional to 86,565,859,666.90, 129,848,789,500.35 and 86,565,859,666.90 is: 129,848,789,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,565,859,666.90 : 129,848,789,500.35 = 86,565,859,666.90 : x
  2. Step 2: Convert to fraction form
    86,565,859,666.90/129,848,789,500.35 = 86,565,859,666.90/x
  3. Step 3: Cross multiply
    86,565,859,666.90x = 129,848,789,500.35 × 86,565,859,666.90
  4. Step 4: Simplify right side
    86,565,859,666.90x = 11,240,472,089,804,136,251,392
  5. Step 5: Solve for x
    x = 11,240,472,089,804,136,251,392/86,565,859,666.90
  6. Step 6: Final answer
    x = 129,848,789,500.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.