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Finding the Fourth Proportional to 124,676.70, 171,875.97 and 76,898.04

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Solution

The fourth proportional to 124,676.70, 171,875.97 and 76,898.04 is: 106,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,676.70 : 171,875.97 = 76,898.04 : x
  2. Step 2: Convert to fraction form
    124,676.70/171,875.97 = 76,898.04/x
  3. Step 3: Cross multiply
    124,676.70x = 171,875.97 × 76,898.04
  4. Step 4: Simplify right side
    124,676.70x = 13,216,925,216.10
  5. Step 5: Solve for x
    x = 13,216,925,216.10/124,676.70
  6. Step 6: Final answer
    x = 106,009.58

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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.