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Finding the Fourth Proportional to 60,764.10, 91,146.15 and 19,211.10

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Solution

The fourth proportional to 60,764.10, 91,146.15 and 19,211.10 is: 28,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,764.10 : 91,146.15 = 19,211.10 : x
  2. Step 2: Convert to fraction form
    60,764.10/91,146.15 = 19,211.10/x
  3. Step 3: Cross multiply
    60,764.10x = 91,146.15 × 19,211.10
  4. Step 4: Simplify right side
    60,764.10x = 1,751,017,802.27
  5. Step 5: Solve for x
    x = 1,751,017,802.27/60,764.10
  6. Step 6: Final answer
    x = 28,816.65

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Similar ratio
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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.