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Finding the Fourth Proportional to 173,233.76, 239,021.88 and 105,248.72

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Solution

The fourth proportional to 173,233.76, 239,021.88 and 105,248.72 is: 145,218.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,233.76 : 239,021.88 = 105,248.72 : x
  2. Step 2: Convert to fraction form
    173,233.76/239,021.88 = 105,248.72/x
  3. Step 3: Cross multiply
    173,233.76x = 239,021.88 × 105,248.72
  4. Step 4: Simplify right side
    173,233.76x = 25,156,746,921.99
  5. Step 5: Solve for x
    x = 25,156,746,921.99/173,233.76
  6. Step 6: Final answer
    x = 145,218.50

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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.