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Finding the Fourth Proportional to 256,789.20, 354,458.16 and 176,482.56

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Solution

The fourth proportional to 256,789.20, 354,458.16 and 176,482.56 is: 243,607.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,789.20 : 354,458.16 = 176,482.56 : x
  2. Step 2: Convert to fraction form
    256,789.20/354,458.16 = 176,482.56/x
  3. Step 3: Cross multiply
    256,789.20x = 354,458.16 × 176,482.56
  4. Step 4: Simplify right side
    256,789.20x = 62,555,683,489.69
  5. Step 5: Solve for x
    x = 62,555,683,489.69/256,789.20
  6. Step 6: Final answer
    x = 243,607.14

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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.