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Finding the Fourth Proportional to 70,463.68, 97,239.85 and 38,631.90

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Solution

The fourth proportional to 70,463.68, 97,239.85 and 38,631.90 is: 53,312.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,463.68 : 97,239.85 = 38,631.90 : x
  2. Step 2: Convert to fraction form
    70,463.68/97,239.85 = 38,631.90/x
  3. Step 3: Cross multiply
    70,463.68x = 97,239.85 × 38,631.90
  4. Step 4: Simplify right side
    70,463.68x = 3,756,560,161.22
  5. Step 5: Solve for x
    x = 3,756,560,161.22/70,463.68
  6. Step 6: Final answer
    x = 53,312.01

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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.