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Finding the Fourth Proportional to 176,443.92, 243,521.64 and 128,854.80

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Solution

The fourth proportional to 176,443.92, 243,521.64 and 128,854.80 is: 177,840.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,443.92 : 243,521.64 = 128,854.80 : x
  2. Step 2: Convert to fraction form
    176,443.92/243,521.64 = 128,854.80/x
  3. Step 3: Cross multiply
    176,443.92x = 243,521.64 × 128,854.80
  4. Step 4: Simplify right side
    176,443.92x = 31,378,932,217.87
  5. Step 5: Solve for x
    x = 31,378,932,217.87/176,443.92
  6. Step 6: Final answer
    x = 177,840.82

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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.