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Finding the Fourth Proportional to 119,063.74, 178,645.59 and 74,122.68

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Solution

The fourth proportional to 119,063.74, 178,645.59 and 74,122.68 is: 111,215.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,063.74 : 178,645.59 = 74,122.68 : x
  2. Step 2: Convert to fraction form
    119,063.74/178,645.59 = 74,122.68/x
  3. Step 3: Cross multiply
    119,063.74x = 178,645.59 × 74,122.68
  4. Step 4: Simplify right side
    119,063.74x = 13,241,688,953.10
  5. Step 5: Solve for x
    x = 13,241,688,953.10/119,063.74
  6. Step 6: Final answer
    x = 111,215.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.