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Finding the Fourth Proportional to 657,785.59, 986,678.43 and 159,149.59

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Solution

The fourth proportional to 657,785.59, 986,678.43 and 159,149.59 is: 238,724.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,785.59 : 986,678.43 = 159,149.59 : x
  2. Step 2: Convert to fraction form
    657,785.59/986,678.43 = 159,149.59/x
  3. Step 3: Cross multiply
    657,785.59x = 986,678.43 × 159,149.59
  4. Step 4: Simplify right side
    657,785.59x = 157,029,467,596.34
  5. Step 5: Solve for x
    x = 157,029,467,596.34/657,785.59
  6. Step 6: Final answer
    x = 238,724.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.