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Finding the Fourth Proportional to 674,062.08, 930,211.20 and 372,261.12

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Solution

The fourth proportional to 674,062.08, 930,211.20 and 372,261.12 is: 513,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,062.08 : 930,211.20 = 372,261.12 : x
  2. Step 2: Convert to fraction form
    674,062.08/930,211.20 = 372,261.12/x
  3. Step 3: Cross multiply
    674,062.08x = 930,211.20 × 372,261.12
  4. Step 4: Simplify right side
    674,062.08x = 346,281,463,148.54
  5. Step 5: Solve for x
    x = 346,281,463,148.54/674,062.08
  6. Step 6: Final answer
    x = 513,723.40

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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.