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Finding the Fourth Proportional to 70,719.89, 105,937.78 and 32,715.92

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Solution

The fourth proportional to 70,719.89, 105,937.78 and 32,715.92 is: 49,008.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,719.89 : 105,937.78 = 32,715.92 : x
  2. Step 2: Convert to fraction form
    70,719.89/105,937.78 = 32,715.92/x
  3. Step 3: Cross multiply
    70,719.89x = 105,937.78 × 32,715.92
  4. Step 4: Simplify right side
    70,719.89x = 3,465,851,935.46
  5. Step 5: Solve for x
    x = 3,465,851,935.46/70,719.89
  6. Step 6: Final answer
    x = 49,008.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.