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Finding the Fourth Proportional to 386,797.44, 533,781.18 and 217,031.16

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Solution

The fourth proportional to 386,797.44, 533,781.18 and 217,031.16 is: 299,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,797.44 : 533,781.18 = 217,031.16 : x
  2. Step 2: Convert to fraction form
    386,797.44/533,781.18 = 217,031.16/x
  3. Step 3: Cross multiply
    386,797.44x = 533,781.18 × 217,031.16
  4. Step 4: Simplify right side
    386,797.44x = 115,847,148,681.57
  5. Step 5: Solve for x
    x = 115,847,148,681.57/386,797.44
  6. Step 6: Final answer
    x = 299,503.40

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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.