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Finding the Fourth Proportional to 99,778,686.30, 149,668,029.45 and 99,778,686.30

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Solution

The fourth proportional to 99,778,686.30, 149,668,029.45 and 99,778,686.30 is: 149,668,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,778,686.30 : 149,668,029.45 = 99,778,686.30 : x
  2. Step 2: Convert to fraction form
    99,778,686.30/149,668,029.45 = 99,778,686.30/x
  3. Step 3: Cross multiply
    99,778,686.30x = 149,668,029.45 × 99,778,686.30
  4. Step 4: Simplify right side
    99,778,686.30x = 14,933,679,359,630,710
  5. Step 5: Solve for x
    x = 14,933,679,359,630,710/99,778,686.30
  6. Step 6: Final answer
    x = 149,668,029.45

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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.