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Finding the Fourth Proportional to 572,723.70, 859,085.55 and 403,887.30

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Solution

The fourth proportional to 572,723.70, 859,085.55 and 403,887.30 is: 605,830.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,723.70 : 859,085.55 = 403,887.30 : x
  2. Step 2: Convert to fraction form
    572,723.70/859,085.55 = 403,887.30/x
  3. Step 3: Cross multiply
    572,723.70x = 859,085.55 × 403,887.30
  4. Step 4: Simplify right side
    572,723.70x = 346,973,743,258.52
  5. Step 5: Solve for x
    x = 346,973,743,258.52/572,723.70
  6. Step 6: Final answer
    x = 605,830.95

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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.