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Finding the Fourth Proportional to 56,652,139.80, 84,978,209.70 and 52,306,133.40

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Solution

The fourth proportional to 56,652,139.80, 84,978,209.70 and 52,306,133.40 is: 78,459,200.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,652,139.80 : 84,978,209.70 = 52,306,133.40 : x
  2. Step 2: Convert to fraction form
    56,652,139.80/84,978,209.70 = 52,306,133.40/x
  3. Step 3: Cross multiply
    56,652,139.80x = 84,978,209.70 × 52,306,133.40
  4. Step 4: Simplify right side
    56,652,139.80x = 4,444,881,572,661,374
  5. Step 5: Solve for x
    x = 4,444,881,572,661,374/56,652,139.80
  6. Step 6: Final answer
    x = 78,459,200.10

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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.