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Finding the Fourth Proportional to 318,600.81, 439,665.71 and 175,357.76

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Solution

The fourth proportional to 318,600.81, 439,665.71 and 175,357.76 is: 241,991.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,600.81 : 439,665.71 = 175,357.76 : x
  2. Step 2: Convert to fraction form
    318,600.81/439,665.71 = 175,357.76/x
  3. Step 3: Cross multiply
    318,600.81x = 439,665.71 × 175,357.76
  4. Step 4: Simplify right side
    318,600.81x = 77,098,790,979.29
  5. Step 5: Solve for x
    x = 77,098,790,979.29/318,600.81
  6. Step 6: Final answer
    x = 241,991.82

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1.5x scale

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.