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Finding the Fourth Proportional to 47,693.74, 65,810.05 and 28,569.03

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Solution

The fourth proportional to 47,693.74, 65,810.05 and 28,569.03 is: 39,420.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,693.74 : 65,810.05 = 28,569.03 : x
  2. Step 2: Convert to fraction form
    47,693.74/65,810.05 = 28,569.03/x
  3. Step 3: Cross multiply
    47,693.74x = 65,810.05 × 28,569.03
  4. Step 4: Simplify right side
    47,693.74x = 1,880,129,292.75
  5. Step 5: Solve for x
    x = 1,880,129,292.75/47,693.74
  6. Step 6: Final answer
    x = 39,420.88

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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.