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Finding the Fourth Proportional to 70,730.31, 97,609.88 and 38,901.26

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Solution

The fourth proportional to 70,730.31, 97,609.88 and 38,901.26 is: 53,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,730.31 : 97,609.88 = 38,901.26 : x
  2. Step 2: Convert to fraction form
    70,730.31/97,609.88 = 38,901.26/x
  3. Step 3: Cross multiply
    70,730.31x = 97,609.88 × 38,901.26
  4. Step 4: Simplify right side
    70,730.31x = 3,797,147,442.91
  5. Step 5: Solve for x
    x = 3,797,147,442.91/70,730.31
  6. Step 6: Final answer
    x = 53,684.87

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1.5x scale

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.