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Finding the Fourth Proportional to 124,840.80, 187,261.20 and 89,848.80

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Solution

The fourth proportional to 124,840.80, 187,261.20 and 89,848.80 is: 134,773.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,840.80 : 187,261.20 = 89,848.80 : x
  2. Step 2: Convert to fraction form
    124,840.80/187,261.20 = 89,848.80/x
  3. Step 3: Cross multiply
    124,840.80x = 187,261.20 × 89,848.80
  4. Step 4: Simplify right side
    124,840.80x = 16,825,194,106.56
  5. Step 5: Solve for x
    x = 16,825,194,106.56/124,840.80
  6. Step 6: Final answer
    x = 134,773.20

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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.