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Finding the Fourth Proportional to 218,864.90, 328,115.10 and 92,602.10

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Solution

The fourth proportional to 218,864.90, 328,115.10 and 92,602.10 is: 138,826.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,864.90 : 328,115.10 = 92,602.10 : x
  2. Step 2: Convert to fraction form
    218,864.90/328,115.10 = 92,602.10/x
  3. Step 3: Cross multiply
    218,864.90x = 328,115.10 × 92,602.10
  4. Step 4: Simplify right side
    218,864.90x = 30,384,147,301.71
  5. Step 5: Solve for x
    x = 30,384,147,301.71/218,864.90
  6. Step 6: Final answer
    x = 138,826.04

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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.