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Finding the Fourth Proportional to 126,871.68, 175,070.16 and 70,272.48

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Solution

The fourth proportional to 126,871.68, 175,070.16 and 70,272.48 is: 96,968.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,871.68 : 175,070.16 = 70,272.48 : x
  2. Step 2: Convert to fraction form
    126,871.68/175,070.16 = 70,272.48/x
  3. Step 3: Cross multiply
    126,871.68x = 175,070.16 × 70,272.48
  4. Step 4: Simplify right side
    126,871.68x = 12,302,614,317.20
  5. Step 5: Solve for x
    x = 12,302,614,317.20/126,871.68
  6. Step 6: Final answer
    x = 96,968.96

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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.