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Finding the Fourth Proportional to 66,471,323.40, 99,712,028.40 and 17,948,471.04

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Solution

The fourth proportional to 66,471,323.40, 99,712,028.40 and 17,948,471.04 is: 26,924,068.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,471,323.40 : 99,712,028.40 = 17,948,471.04 : x
  2. Step 2: Convert to fraction form
    66,471,323.40/99,712,028.40 = 17,948,471.04/x
  3. Step 3: Cross multiply
    66,471,323.40x = 99,712,028.40 × 17,948,471.04
  4. Step 4: Simplify right side
    66,471,323.40x = 1,789,678,454,077,057.50
  5. Step 5: Solve for x
    x = 1,789,678,454,077,057.50/66,471,323.40
  6. Step 6: Final answer
    x = 26,924,068.34

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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.