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Finding the Fourth Proportional to 48,856.32, 67,389.84 and 30,932.64

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Solution

The fourth proportional to 48,856.32, 67,389.84 and 30,932.64 is: 42,666.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,856.32 : 67,389.84 = 30,932.64 : x
  2. Step 2: Convert to fraction form
    48,856.32/67,389.84 = 30,932.64/x
  3. Step 3: Cross multiply
    48,856.32x = 67,389.84 × 30,932.64
  4. Step 4: Simplify right side
    48,856.32x = 2,084,545,660.38
  5. Step 5: Solve for x
    x = 2,084,545,660.38/48,856.32
  6. Step 6: Final answer
    x = 42,666.86

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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.