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Finding the Fourth Proportional to 60,398.68, 90,603.16 and 18,279.12

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Solution

The fourth proportional to 60,398.68, 90,603.16 and 18,279.12 is: 27,420.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,398.68 : 90,603.16 = 18,279.12 : x
  2. Step 2: Convert to fraction form
    60,398.68/90,603.16 = 18,279.12/x
  3. Step 3: Cross multiply
    60,398.68x = 90,603.16 × 18,279.12
  4. Step 4: Simplify right side
    60,398.68x = 1,656,146,034.02
  5. Step 5: Solve for x
    x = 1,656,146,034.02/60,398.68
  6. Step 6: Final answer
    x = 27,420.24

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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.