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Finding the Fourth Proportional to 424,616.88, 636,925.30 and 109,074.08

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Solution

The fourth proportional to 424,616.88, 636,925.30 and 109,074.08 is: 163,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,616.88 : 636,925.30 = 109,074.08 : x
  2. Step 2: Convert to fraction form
    424,616.88/636,925.30 = 109,074.08/x
  3. Step 3: Cross multiply
    424,616.88x = 636,925.30 × 109,074.08
  4. Step 4: Simplify right side
    424,616.88x = 69,472,041,126.22
  5. Step 5: Solve for x
    x = 69,472,041,126.22/424,616.88
  6. Step 6: Final answer
    x = 163,611.11

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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.