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Finding the Fourth Proportional to 57,747.40, 86,621.10 and 48,999.40

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Solution

The fourth proportional to 57,747.40, 86,621.10 and 48,999.40 is: 73,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,747.40 : 86,621.10 = 48,999.40 : x
  2. Step 2: Convert to fraction form
    57,747.40/86,621.10 = 48,999.40/x
  3. Step 3: Cross multiply
    57,747.40x = 86,621.10 × 48,999.40
  4. Step 4: Simplify right side
    57,747.40x = 4,244,381,927.34
  5. Step 5: Solve for x
    x = 4,244,381,927.34/57,747.40
  6. Step 6: Final answer
    x = 73,499.10

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Half scale
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Double scale
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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.