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Finding the Fourth Proportional to 103,958.80, 155,938.20 and 93,461.20

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Solution

The fourth proportional to 103,958.80, 155,938.20 and 93,461.20 is: 140,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,958.80 : 155,938.20 = 93,461.20 : x
  2. Step 2: Convert to fraction form
    103,958.80/155,938.20 = 93,461.20/x
  3. Step 3: Cross multiply
    103,958.80x = 155,938.20 × 93,461.20
  4. Step 4: Simplify right side
    103,958.80x = 14,574,171,297.84
  5. Step 5: Solve for x
    x = 14,574,171,297.84/103,958.80
  6. Step 6: Final answer
    x = 140,191.80

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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.