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Finding the Fourth Proportional to 70,540.61, 97,347.24 and 38,712.47

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Solution

The fourth proportional to 70,540.61, 97,347.24 and 38,712.47 is: 53,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,540.61 : 97,347.24 = 38,712.47 : x
  2. Step 2: Convert to fraction form
    70,540.61/97,347.24 = 38,712.47/x
  3. Step 3: Cross multiply
    70,540.61x = 97,347.24 × 38,712.47
  4. Step 4: Simplify right side
    70,540.61x = 3,768,552,108.08
  5. Step 5: Solve for x
    x = 3,768,552,108.08/70,540.61
  6. Step 6: Final answer
    x = 53,423.87

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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.