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Finding the Fourth Proportional to 124,411.84, 171,688.08 and 67,823.20

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Solution

The fourth proportional to 124,411.84, 171,688.08 and 67,823.20 is: 93,595.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,411.84 : 171,688.08 = 67,823.20 : x
  2. Step 2: Convert to fraction form
    124,411.84/171,688.08 = 67,823.20/x
  3. Step 3: Cross multiply
    124,411.84x = 171,688.08 × 67,823.20
  4. Step 4: Simplify right side
    124,411.84x = 11,644,434,987.46
  5. Step 5: Solve for x
    x = 11,644,434,987.46/124,411.84
  6. Step 6: Final answer
    x = 93,595.87

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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.