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Finding the Fourth Proportional to 118,101.42, 162,981.19 and 64,386.14

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Solution

The fourth proportional to 118,101.42, 162,981.19 and 64,386.14 is: 88,853.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,101.42 : 162,981.19 = 64,386.14 : x
  2. Step 2: Convert to fraction form
    118,101.42/162,981.19 = 64,386.14/x
  3. Step 3: Cross multiply
    118,101.42x = 162,981.19 × 64,386.14
  4. Step 4: Simplify right side
    118,101.42x = 10,493,729,716.71
  5. Step 5: Solve for x
    x = 10,493,729,716.71/118,101.42
  6. Step 6: Final answer
    x = 88,853.54

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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.