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Finding the Fourth Proportional to 572,593.80, 858,890.70 and 146,128.80

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Solution

The fourth proportional to 572,593.80, 858,890.70 and 146,128.80 is: 219,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,593.80 : 858,890.70 = 146,128.80 : x
  2. Step 2: Convert to fraction form
    572,593.80/858,890.70 = 146,128.80/x
  3. Step 3: Cross multiply
    572,593.80x = 858,890.70 × 146,128.80
  4. Step 4: Simplify right side
    572,593.80x = 125,508,667,322.16
  5. Step 5: Solve for x
    x = 125,508,667,322.16/572,593.80
  6. Step 6: Final answer
    x = 219,193.20

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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.