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Finding the Fourth Proportional to 83,699.80, 125,549.70 and 48,270.40

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Solution

The fourth proportional to 83,699.80, 125,549.70 and 48,270.40 is: 72,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,699.80 : 125,549.70 = 48,270.40 : x
  2. Step 2: Convert to fraction form
    83,699.80/125,549.70 = 48,270.40/x
  3. Step 3: Cross multiply
    83,699.80x = 125,549.70 × 48,270.40
  4. Step 4: Simplify right side
    83,699.80x = 6,060,334,238.88
  5. Step 5: Solve for x
    x = 6,060,334,238.88/83,699.80
  6. Step 6: Final answer
    x = 72,405.60

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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.