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Finding the Fourth Proportional to 400,103.68, 549,833.84 and 381,601.12

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Solution

The fourth proportional to 400,103.68, 549,833.84 and 381,601.12 is: 524,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,103.68 : 549,833.84 = 381,601.12 : x
  2. Step 2: Convert to fraction form
    400,103.68/549,833.84 = 381,601.12/x
  3. Step 3: Cross multiply
    400,103.68x = 549,833.84 × 381,601.12
  4. Step 4: Simplify right side
    400,103.68x = 209,817,209,157.90
  5. Step 5: Solve for x
    x = 209,817,209,157.90/400,103.68
  6. Step 6: Final answer
    x = 524,407.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.