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Finding the Fourth Proportional to 71,663.16, 98,868.96 and 43,358.52

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Solution

The fourth proportional to 71,663.16, 98,868.96 and 43,358.52 is: 59,818.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.16 : 98,868.96 = 43,358.52 : x
  2. Step 2: Convert to fraction form
    71,663.16/98,868.96 = 43,358.52/x
  3. Step 3: Cross multiply
    71,663.16x = 98,868.96 × 43,358.52
  4. Step 4: Simplify right side
    71,663.16x = 4,286,811,779.54
  5. Step 5: Solve for x
    x = 4,286,811,779.54/71,663.16
  6. Step 6: Final answer
    x = 59,818.91

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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.