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Finding the Fourth Proportional to 57,905.80, 86,907.30 and 28,348.90

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Solution

The fourth proportional to 57,905.80, 86,907.30 and 28,348.90 is: 42,547.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,905.80 : 86,907.30 = 28,348.90 : x
  2. Step 2: Convert to fraction form
    57,905.80/86,907.30 = 28,348.90/x
  3. Step 3: Cross multiply
    57,905.80x = 86,907.30 × 28,348.90
  4. Step 4: Simplify right side
    57,905.80x = 2,463,726,356.97
  5. Step 5: Solve for x
    x = 2,463,726,356.97/57,905.80
  6. Step 6: Final answer
    x = 42,547.14

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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.