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Finding the Fourth Proportional to 62,783.72, 86,641.08 and 34,488.80

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Solution

The fourth proportional to 62,783.72, 86,641.08 and 34,488.80 is: 47,594.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,783.72 : 86,641.08 = 34,488.80 : x
  2. Step 2: Convert to fraction form
    62,783.72/86,641.08 = 34,488.80/x
  3. Step 3: Cross multiply
    62,783.72x = 86,641.08 × 34,488.80
  4. Step 4: Simplify right side
    62,783.72x = 2,988,146,879.90
  5. Step 5: Solve for x
    x = 2,988,146,879.90/62,783.72
  6. Step 6: Final answer
    x = 47,594.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.