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Finding the Fourth Proportional to 162,787.80, 244,149.30 and 78,547.80

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Solution

The fourth proportional to 162,787.80, 244,149.30 and 78,547.80 is: 117,806.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,787.80 : 244,149.30 = 78,547.80 : x
  2. Step 2: Convert to fraction form
    162,787.80/244,149.30 = 78,547.80/x
  3. Step 3: Cross multiply
    162,787.80x = 244,149.30 × 78,547.80
  4. Step 4: Simplify right side
    162,787.80x = 19,177,390,386.54
  5. Step 5: Solve for x
    x = 19,177,390,386.54/162,787.80
  6. Step 6: Final answer
    x = 117,806.07

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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.