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Finding the Fourth Proportional to 546,077.40, 819,116.10 and 386,645.10

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Solution

The fourth proportional to 546,077.40, 819,116.10 and 386,645.10 is: 579,967.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,077.40 : 819,116.10 = 386,645.10 : x
  2. Step 2: Convert to fraction form
    546,077.40/819,116.10 = 386,645.10/x
  3. Step 3: Cross multiply
    546,077.40x = 819,116.10 × 386,645.10
  4. Step 4: Simplify right side
    546,077.40x = 316,707,226,396.11
  5. Step 5: Solve for x
    x = 316,707,226,396.11/546,077.40
  6. Step 6: Final answer
    x = 579,967.65

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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.