Home / 86,508,086.80-129,762,130.20-76,430,390.80

Finding the Fourth Proportional to 86,508,086.80, 129,762,130.20 and 76,430,390.80

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Solution

The fourth proportional to 86,508,086.80, 129,762,130.20 and 76,430,390.80 is: 114,645,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508,086.80 : 129,762,130.20 = 76,430,390.80 : x
  2. Step 2: Convert to fraction form
    86,508,086.80/129,762,130.20 = 76,430,390.80/x
  3. Step 3: Cross multiply
    86,508,086.80x = 129,762,130.20 × 76,430,390.80
  4. Step 4: Simplify right side
    86,508,086.80x = 9,917,770,322,226,482
  5. Step 5: Solve for x
    x = 9,917,770,322,226,482/86,508,086.80
  6. Step 6: Final answer
    x = 114,645,586.20

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Double scale
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Similar ratio
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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.