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Finding the Fourth Proportional to 546,209.91, 819,314.86 and 172,232.91

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Solution

The fourth proportional to 546,209.91, 819,314.86 and 172,232.91 is: 258,349.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,209.91 : 819,314.86 = 172,232.91 : x
  2. Step 2: Convert to fraction form
    546,209.91/819,314.86 = 172,232.91/x
  3. Step 3: Cross multiply
    546,209.91x = 819,314.86 × 172,232.91
  4. Step 4: Simplify right side
    546,209.91x = 141,112,982,113.46
  5. Step 5: Solve for x
    x = 141,112,982,113.46/546,209.91
  6. Step 6: Final answer
    x = 258,349.36

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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.