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Finding the Fourth Proportional to 154,830.60, 232,461.90 and 99,016.20

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Solution

The fourth proportional to 154,830.60, 232,461.90 and 99,016.20 is: 148,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,830.60 : 232,461.90 = 99,016.20 : x
  2. Step 2: Convert to fraction form
    154,830.60/232,461.90 = 99,016.20/x
  3. Step 3: Cross multiply
    154,830.60x = 232,461.90 × 99,016.20
  4. Step 4: Simplify right side
    154,830.60x = 23,017,493,982.78
  5. Step 5: Solve for x
    x = 23,017,493,982.78/154,830.60
  6. Step 6: Final answer
    x = 148,662.43

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1.5x scale

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.