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Finding the Fourth Proportional to 539,890.26, 745,034.30 and 298,167.63

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Solution

The fourth proportional to 539,890.26, 745,034.30 and 298,167.63 is: 411,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,890.26 : 745,034.30 = 298,167.63 : x
  2. Step 2: Convert to fraction form
    539,890.26/745,034.30 = 298,167.63/x
  3. Step 3: Cross multiply
    539,890.26x = 745,034.30 × 298,167.63
  4. Step 4: Simplify right side
    539,890.26x = 222,145,108,333.12
  5. Step 5: Solve for x
    x = 222,145,108,333.12/539,890.26
  6. Step 6: Final answer
    x = 411,463.45

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.