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Finding the Fourth Proportional to 292,655.60, 439,129.20 and 166,392.80

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Solution

The fourth proportional to 292,655.60, 439,129.20 and 166,392.80 is: 249,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,655.60 : 439,129.20 = 166,392.80 : x
  2. Step 2: Convert to fraction form
    292,655.60/439,129.20 = 166,392.80/x
  3. Step 3: Cross multiply
    292,655.60x = 439,129.20 × 166,392.80
  4. Step 4: Simplify right side
    292,655.60x = 73,067,937,149.76
  5. Step 5: Solve for x
    x = 73,067,937,149.76/292,655.60
  6. Step 6: Final answer
    x = 249,672.10

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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.