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Finding the Fourth Proportional to 60,985.92, 91,478.88 and 19,436.16

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Solution

The fourth proportional to 60,985.92, 91,478.88 and 19,436.16 is: 29,154.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,985.92 : 91,478.88 = 19,436.16 : x
  2. Step 2: Convert to fraction form
    60,985.92/91,478.88 = 19,436.16/x
  3. Step 3: Cross multiply
    60,985.92x = 91,478.88 × 19,436.16
  4. Step 4: Simplify right side
    60,985.92x = 1,777,998,148.30
  5. Step 5: Solve for x
    x = 1,777,998,148.30/60,985.92
  6. Step 6: Final answer
    x = 29,154.24

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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.