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Finding the Fourth Proportional to 70,862.68, 97,794.92 and 39,031.56

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Solution

The fourth proportional to 70,862.68, 97,794.92 and 39,031.56 is: 53,865.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,862.68 : 97,794.92 = 39,031.56 : x
  2. Step 2: Convert to fraction form
    70,862.68/97,794.92 = 39,031.56/x
  3. Step 3: Cross multiply
    70,862.68x = 97,794.92 × 39,031.56
  4. Step 4: Simplify right side
    70,862.68x = 3,817,088,287.68
  5. Step 5: Solve for x
    x = 3,817,088,287.68/70,862.68
  6. Step 6: Final answer
    x = 53,865.99

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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.