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Finding the Fourth Proportional to 124,393.67, 171,663.30 and 70,678.76

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Solution

The fourth proportional to 124,393.67, 171,663.30 and 70,678.76 is: 97,536.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,393.67 : 171,663.30 = 70,678.76 : x
  2. Step 2: Convert to fraction form
    124,393.67/171,663.30 = 70,678.76/x
  3. Step 3: Cross multiply
    124,393.67x = 171,663.30 × 70,678.76
  4. Step 4: Simplify right side
    124,393.67x = 12,132,948,323.19
  5. Step 5: Solve for x
    x = 12,132,948,323.19/124,393.67
  6. Step 6: Final answer
    x = 97,536.71

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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.