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Finding the Fourth Proportional to 124,545.76, 171,895.44 and 74,248

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Solution

The fourth proportional to 124,545.76, 171,895.44 and 74,248 is: 102,475.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,545.76 : 171,895.44 = 74,248 : x
  2. Step 2: Convert to fraction form
    124,545.76/171,895.44 = 74,248/x
  3. Step 3: Cross multiply
    124,545.76x = 171,895.44 × 74,248
  4. Step 4: Simplify right side
    124,545.76x = 12,762,892,629.12
  5. Step 5: Solve for x
    x = 12,762,892,629.12/124,545.76
  6. Step 6: Final answer
    x = 102,475.53

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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.