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Finding the Fourth Proportional to 124,841.64, 172,281.45 and 68,253

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Solution

The fourth proportional to 124,841.64, 172,281.45 and 68,253 is: 94,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,841.64 : 172,281.45 = 68,253 : x
  2. Step 2: Convert to fraction form
    124,841.64/172,281.45 = 68,253/x
  3. Step 3: Cross multiply
    124,841.64x = 172,281.45 × 68,253
  4. Step 4: Simplify right side
    124,841.64x = 11,758,725,806.85
  5. Step 5: Solve for x
    x = 11,758,725,806.85/124,841.64
  6. Step 6: Final answer
    x = 94,189.13

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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.