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Finding the Fourth Proportional to 198,429.74, 273,823.74 and 112,386.68

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Solution

The fourth proportional to 198,429.74, 273,823.74 and 112,386.68 is: 155,088.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,429.74 : 273,823.74 = 112,386.68 : x
  2. Step 2: Convert to fraction form
    198,429.74/273,823.74 = 112,386.68/x
  3. Step 3: Cross multiply
    198,429.74x = 273,823.74 × 112,386.68
  4. Step 4: Simplify right side
    198,429.74x = 30,774,141,043.78
  5. Step 5: Solve for x
    x = 30,774,141,043.78/198,429.74
  6. Step 6: Final answer
    x = 155,088.35

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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.