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Finding the Fourth Proportional to 572,557.20, 858,835.80 and 403,720.80

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Solution

The fourth proportional to 572,557.20, 858,835.80 and 403,720.80 is: 605,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,557.20 : 858,835.80 = 403,720.80 : x
  2. Step 2: Convert to fraction form
    572,557.20/858,835.80 = 403,720.80/x
  3. Step 3: Cross multiply
    572,557.20x = 858,835.80 × 403,720.80
  4. Step 4: Simplify right side
    572,557.20x = 346,729,876,244.64
  5. Step 5: Solve for x
    x = 346,729,876,244.64/572,557.20
  6. Step 6: Final answer
    x = 605,581.20

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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.