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Finding the Fourth Proportional to 403,254.40, 604,622.40 and 166,691.20

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Solution

The fourth proportional to 403,254.40, 604,622.40 and 166,691.20 is: 249,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,254.40 : 604,622.40 = 166,691.20 : x
  2. Step 2: Convert to fraction form
    403,254.40/604,622.40 = 166,691.20/x
  3. Step 3: Cross multiply
    403,254.40x = 604,622.40 × 166,691.20
  4. Step 4: Simplify right side
    403,254.40x = 100,785,233,402.88
  5. Step 5: Solve for x
    x = 100,785,233,402.88/403,254.40
  6. Step 6: Final answer
    x = 249,929.66

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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.