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Finding the Fourth Proportional to 124,511.74, 171,881.86 and 84,347.48

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Solution

The fourth proportional to 124,511.74, 171,881.86 and 84,347.48 is: 116,437.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,511.74 : 171,881.86 = 84,347.48 : x
  2. Step 2: Convert to fraction form
    124,511.74/171,881.86 = 84,347.48/x
  3. Step 3: Cross multiply
    124,511.74x = 171,881.86 × 84,347.48
  4. Step 4: Simplify right side
    124,511.74x = 14,497,801,748.71
  5. Step 5: Solve for x
    x = 14,497,801,748.71/124,511.74
  6. Step 6: Final answer
    x = 116,437.23

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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.