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Finding the Fourth Proportional to 124,536.40, 171,860.52 and 70,820.08

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Solution

The fourth proportional to 124,536.40, 171,860.52 and 70,820.08 is: 97,731.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,536.40 : 171,860.52 = 70,820.08 : x
  2. Step 2: Convert to fraction form
    124,536.40/171,860.52 = 70,820.08/x
  3. Step 3: Cross multiply
    124,536.40x = 171,860.52 × 70,820.08
  4. Step 4: Simplify right side
    124,536.40x = 12,171,175,775.24
  5. Step 5: Solve for x
    x = 12,171,175,775.24/124,536.40
  6. Step 6: Final answer
    x = 97,731.87

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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.