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Finding the Fourth Proportional to 113,776.98, 170,526.87 and 80,506.50

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Solution

The fourth proportional to 113,776.98, 170,526.87 and 80,506.50 is: 120,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,776.98 : 170,526.87 = 80,506.50 : x
  2. Step 2: Convert to fraction form
    113,776.98/170,526.87 = 80,506.50/x
  3. Step 3: Cross multiply
    113,776.98x = 170,526.87 × 80,506.50
  4. Step 4: Simplify right side
    113,776.98x = 13,728,521,459.66
  5. Step 5: Solve for x
    x = 13,728,521,459.66/113,776.98
  6. Step 6: Final answer
    x = 120,661.68

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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.