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Finding the Fourth Proportional to 91,958.80, 137,938.20 and 73,526.80

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Solution

The fourth proportional to 91,958.80, 137,938.20 and 73,526.80 is: 110,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,958.80 : 137,938.20 = 73,526.80 : x
  2. Step 2: Convert to fraction form
    91,958.80/137,938.20 = 73,526.80/x
  3. Step 3: Cross multiply
    91,958.80x = 137,938.20 × 73,526.80
  4. Step 4: Simplify right side
    91,958.80x = 10,142,154,443.76
  5. Step 5: Solve for x
    x = 10,142,154,443.76/91,958.80
  6. Step 6: Final answer
    x = 110,290.20

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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.