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Finding the Fourth Proportional to 540,275.56, 745,560.21 and 298,553.11

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Solution

The fourth proportional to 540,275.56, 745,560.21 and 298,553.11 is: 411,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,275.56 : 745,560.21 = 298,553.11 : x
  2. Step 2: Convert to fraction form
    540,275.56/745,560.21 = 298,553.11/x
  3. Step 3: Cross multiply
    540,275.56x = 745,560.21 × 298,553.11
  4. Step 4: Simplify right side
    540,275.56x = 222,589,319,387.75
  5. Step 5: Solve for x
    x = 222,589,319,387.75/540,275.56
  6. Step 6: Final answer
    x = 411,992.21

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Double scale
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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.