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Finding the Fourth Proportional to 71,646.40, 107,469.60 and 62,898.40

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Solution

The fourth proportional to 71,646.40, 107,469.60 and 62,898.40 is: 94,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,646.40 : 107,469.60 = 62,898.40 : x
  2. Step 2: Convert to fraction form
    71,646.40/107,469.60 = 62,898.40/x
  3. Step 3: Cross multiply
    71,646.40x = 107,469.60 × 62,898.40
  4. Step 4: Simplify right side
    71,646.40x = 6,759,665,888.64
  5. Step 5: Solve for x
    x = 6,759,665,888.64/71,646.40
  6. Step 6: Final answer
    x = 94,347.60

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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.