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Finding the Fourth Proportional to 45,866.61, 68,810.76 and 14,275.20

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Solution

The fourth proportional to 45,866.61, 68,810.76 and 14,275.20 is: 21,416.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,866.61 : 68,810.76 = 14,275.20 : x
  2. Step 2: Convert to fraction form
    45,866.61/68,810.76 = 14,275.20/x
  3. Step 3: Cross multiply
    45,866.61x = 68,810.76 × 14,275.20
  4. Step 4: Simplify right side
    45,866.61x = 982,287,361.15
  5. Step 5: Solve for x
    x = 982,287,361.15/45,866.61
  6. Step 6: Final answer
    x = 21,416.18

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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.