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Finding the Fourth Proportional to 74,903,394.80, 112,355,092.20 and 52,209,916.40

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Solution

The fourth proportional to 74,903,394.80, 112,355,092.20 and 52,209,916.40 is: 78,314,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,903,394.80 : 112,355,092.20 = 52,209,916.40 : x
  2. Step 2: Convert to fraction form
    74,903,394.80/112,355,092.20 = 52,209,916.40/x
  3. Step 3: Cross multiply
    74,903,394.80x = 112,355,092.20 × 52,209,916.40
  4. Step 4: Simplify right side
    74,903,394.80x = 5,866,049,970,876,292
  5. Step 5: Solve for x
    x = 5,866,049,970,876,292/74,903,394.80
  6. Step 6: Final answer
    x = 78,314,874.60

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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.