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Finding the Fourth Proportional to 985,609.40, 1,478,414.10 and 237,655.40

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Solution

The fourth proportional to 985,609.40, 1,478,414.10 and 237,655.40 is: 356,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,609.40 : 1,478,414.10 = 237,655.40 : x
  2. Step 2: Convert to fraction form
    985,609.40/1,478,414.10 = 237,655.40/x
  3. Step 3: Cross multiply
    985,609.40x = 1,478,414.10 × 237,655.40
  4. Step 4: Simplify right side
    985,609.40x = 351,353,094,301.14
  5. Step 5: Solve for x
    x = 351,353,094,301.14/985,609.40
  6. Step 6: Final answer
    x = 356,483.10

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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.