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Finding the Fourth Proportional to 147,907.60, 221,731.80 and 88,680.40

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Solution

The fourth proportional to 147,907.60, 221,731.80 and 88,680.40 is: 132,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,907.60 : 221,731.80 = 88,680.40 : x
  2. Step 2: Convert to fraction form
    147,907.60/221,731.80 = 88,680.40/x
  3. Step 3: Cross multiply
    147,907.60x = 221,731.80 × 88,680.40
  4. Step 4: Simplify right side
    147,907.60x = 19,663,264,716.72
  5. Step 5: Solve for x
    x = 19,663,264,716.72/147,907.60
  6. Step 6: Final answer
    x = 132,942.90

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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.