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Finding the Fourth Proportional to 98,787.60, 148,181.40 and 63,358.20

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Solution

The fourth proportional to 98,787.60, 148,181.40 and 63,358.20 is: 95,037.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,787.60 : 148,181.40 = 63,358.20 : x
  2. Step 2: Convert to fraction form
    98,787.60/148,181.40 = 63,358.20/x
  3. Step 3: Cross multiply
    98,787.60x = 148,181.40 × 63,358.20
  4. Step 4: Simplify right side
    98,787.60x = 9,388,506,777.48
  5. Step 5: Solve for x
    x = 9,388,506,777.48/98,787.60
  6. Step 6: Final answer
    x = 95,037.30

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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.