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Finding the Fourth Proportional to 665,591.04, 918,514.08 and 363,787.20

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Solution

The fourth proportional to 665,591.04, 918,514.08 and 363,787.20 is: 502,025.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,591.04 : 918,514.08 = 363,787.20 : x
  2. Step 2: Convert to fraction form
    665,591.04/918,514.08 = 363,787.20/x
  3. Step 3: Cross multiply
    665,591.04x = 918,514.08 × 363,787.20
  4. Step 4: Simplify right side
    665,591.04x = 334,143,665,323.78
  5. Step 5: Solve for x
    x = 334,143,665,323.78/665,591.04
  6. Step 6: Final answer
    x = 502,025.49

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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.