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Finding the Fourth Proportional to 111,869.60, 167,746.80 and 41,712.80

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Solution

The fourth proportional to 111,869.60, 167,746.80 and 41,712.80 is: 62,547.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,869.60 : 167,746.80 = 41,712.80 : x
  2. Step 2: Convert to fraction form
    111,869.60/167,746.80 = 41,712.80/x
  3. Step 3: Cross multiply
    111,869.60x = 167,746.80 × 41,712.80
  4. Step 4: Simplify right side
    111,869.60x = 6,997,188,719.04
  5. Step 5: Solve for x
    x = 6,997,188,719.04/111,869.60
  6. Step 6: Final answer
    x = 62,547.72

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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.