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Finding the Fourth Proportional to 57,938,693.60, 86,908,040.40 and 57,042,898.40

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Solution

The fourth proportional to 57,938,693.60, 86,908,040.40 and 57,042,898.40 is: 85,564,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,938,693.60 : 86,908,040.40 = 57,042,898.40 : x
  2. Step 2: Convert to fraction form
    57,938,693.60/86,908,040.40 = 57,042,898.40/x
  3. Step 3: Cross multiply
    57,938,693.60x = 86,908,040.40 × 57,042,898.40
  4. Step 4: Simplify right side
    57,938,693.60x = 4,957,486,518,680,296
  5. Step 5: Solve for x
    x = 4,957,486,518,680,296/57,938,693.60
  6. Step 6: Final answer
    x = 85,564,347.60

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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.