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Finding the Fourth Proportional to 125,468.76, 173,136.18 and 71,745.10

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Solution

The fourth proportional to 125,468.76, 173,136.18 and 71,745.10 is: 99,002.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,468.76 : 173,136.18 = 71,745.10 : x
  2. Step 2: Convert to fraction form
    125,468.76/173,136.18 = 71,745.10/x
  3. Step 3: Cross multiply
    125,468.76x = 173,136.18 × 71,745.10
  4. Step 4: Simplify right side
    125,468.76x = 12,421,672,547.72
  5. Step 5: Solve for x
    x = 12,421,672,547.72/125,468.76
  6. Step 6: Final answer
    x = 99,002.11

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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.