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Finding the Fourth Proportional to 67,999.90, 101,769.45 and 67,999.90

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Solution

The fourth proportional to 67,999.90, 101,769.45 and 67,999.90 is: 101,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,999.90 : 101,769.45 = 67,999.90 : x
  2. Step 2: Convert to fraction form
    67,999.90/101,769.45 = 67,999.90/x
  3. Step 3: Cross multiply
    67,999.90x = 101,769.45 × 67,999.90
  4. Step 4: Simplify right side
    67,999.90x = 6,920,312,423.06
  5. Step 5: Solve for x
    x = 6,920,312,423.06/67,999.90
  6. Step 6: Final answer
    x = 101,769.45

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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.