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Finding the Fourth Proportional to 113,655.56, 156,845.90 and 62,668.42

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Solution

The fourth proportional to 113,655.56, 156,845.90 and 62,668.42 is: 86,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,655.56 : 156,845.90 = 62,668.42 : x
  2. Step 2: Convert to fraction form
    113,655.56/156,845.90 = 62,668.42/x
  3. Step 3: Cross multiply
    113,655.56x = 156,845.90 × 62,668.42
  4. Step 4: Simplify right side
    113,655.56x = 9,829,284,501.03
  5. Step 5: Solve for x
    x = 9,829,284,501.03/113,655.56
  6. Step 6: Final answer
    x = 86,483.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.