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Finding the Fourth Proportional to 615,543.40, 923,315.10 and 447,581.80

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Solution

The fourth proportional to 615,543.40, 923,315.10 and 447,581.80 is: 671,372.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,543.40 : 923,315.10 = 447,581.80 : x
  2. Step 2: Convert to fraction form
    615,543.40/923,315.10 = 447,581.80/x
  3. Step 3: Cross multiply
    615,543.40x = 923,315.10 × 447,581.80
  4. Step 4: Simplify right side
    615,543.40x = 413,259,034,425.18
  5. Step 5: Solve for x
    x = 413,259,034,425.18/615,543.40
  6. Step 6: Final answer
    x = 671,372.70

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Double scale
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Similar ratio
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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.