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Finding the Fourth Proportional to 136,757.12, 205,070.02 and 64,649.98

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Solution

The fourth proportional to 136,757.12, 205,070.02 and 64,649.98 is: 96,943.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,757.12 : 205,070.02 = 64,649.98 : x
  2. Step 2: Convert to fraction form
    136,757.12/205,070.02 = 64,649.98/x
  3. Step 3: Cross multiply
    136,757.12x = 205,070.02 × 64,649.98
  4. Step 4: Simplify right side
    136,757.12x = 13,257,772,691.60
  5. Step 5: Solve for x
    x = 13,257,772,691.60/136,757.12
  6. Step 6: Final answer
    x = 96,943.93

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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.