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Finding the Fourth Proportional to 207,251.80, 310,877.70 and 74,136.40

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Solution

The fourth proportional to 207,251.80, 310,877.70 and 74,136.40 is: 111,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,251.80 : 310,877.70 = 74,136.40 : x
  2. Step 2: Convert to fraction form
    207,251.80/310,877.70 = 74,136.40/x
  3. Step 3: Cross multiply
    207,251.80x = 310,877.70 × 74,136.40
  4. Step 4: Simplify right side
    207,251.80x = 23,047,353,518.28
  5. Step 5: Solve for x
    x = 23,047,353,518.28/207,251.80
  6. Step 6: Final answer
    x = 111,204.60

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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.