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Finding the Fourth Proportional to 125,254.86, 172,851.48 and 68,666.64

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Solution

The fourth proportional to 125,254.86, 172,851.48 and 68,666.64 is: 94,759.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,254.86 : 172,851.48 = 68,666.64 : x
  2. Step 2: Convert to fraction form
    125,254.86/172,851.48 = 68,666.64/x
  3. Step 3: Cross multiply
    125,254.86x = 172,851.48 × 68,666.64
  4. Step 4: Simplify right side
    125,254.86x = 11,869,130,350.63
  5. Step 5: Solve for x
    x = 11,869,130,350.63/125,254.86
  6. Step 6: Final answer
    x = 94,759.84

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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.