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Finding the Fourth Proportional to 376,781.60, 520,095.30 and 249,498.20

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Solution

The fourth proportional to 376,781.60, 520,095.30 and 249,498.20 is: 344,398.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,781.60 : 520,095.30 = 249,498.20 : x
  2. Step 2: Convert to fraction form
    376,781.60/520,095.30 = 249,498.20/x
  3. Step 3: Cross multiply
    376,781.60x = 520,095.30 × 249,498.20
  4. Step 4: Simplify right side
    376,781.60x = 129,762,841,178.46
  5. Step 5: Solve for x
    x = 129,762,841,178.46/376,781.60
  6. Step 6: Final answer
    x = 344,398.03

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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.