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Finding the Fourth Proportional to 62,458.10, 93,687.15 and 20,905.10

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Solution

The fourth proportional to 62,458.10, 93,687.15 and 20,905.10 is: 31,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,458.10 : 93,687.15 = 20,905.10 : x
  2. Step 2: Convert to fraction form
    62,458.10/93,687.15 = 20,905.10/x
  3. Step 3: Cross multiply
    62,458.10x = 93,687.15 × 20,905.10
  4. Step 4: Simplify right side
    62,458.10x = 1,958,539,239.47
  5. Step 5: Solve for x
    x = 1,958,539,239.47/62,458.10
  6. Step 6: Final answer
    x = 31,357.65

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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.