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Finding the Fourth Proportional to 70,647.57, 97,498.42 and 38,816.87

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Solution

The fourth proportional to 70,647.57, 97,498.42 and 38,816.87 is: 53,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,647.57 : 97,498.42 = 38,816.87 : x
  2. Step 2: Convert to fraction form
    70,647.57/97,498.42 = 38,816.87/x
  3. Step 3: Cross multiply
    70,647.57x = 97,498.42 × 38,816.87
  4. Step 4: Simplify right side
    70,647.57x = 3,784,582,909.81
  5. Step 5: Solve for x
    x = 3,784,582,909.81/70,647.57
  6. Step 6: Final answer
    x = 53,569.90

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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.