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Finding the Fourth Proportional to 113,211.80, 169,817.70 and 73,813.40

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Solution

The fourth proportional to 113,211.80, 169,817.70 and 73,813.40 is: 110,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,211.80 : 169,817.70 = 73,813.40 : x
  2. Step 2: Convert to fraction form
    113,211.80/169,817.70 = 73,813.40/x
  3. Step 3: Cross multiply
    113,211.80x = 169,817.70 × 73,813.40
  4. Step 4: Simplify right side
    113,211.80x = 12,534,821,817.18
  5. Step 5: Solve for x
    x = 12,534,821,817.18/113,211.80
  6. Step 6: Final answer
    x = 110,720.10

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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.