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Finding the Fourth Proportional to 18,751.52, 25,876.40 and 10,368.16

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Solution

The fourth proportional to 18,751.52, 25,876.40 and 10,368.16 is: 14,307.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.52 : 25,876.40 = 10,368.16 : x
  2. Step 2: Convert to fraction form
    18,751.52/25,876.40 = 10,368.16/x
  3. Step 3: Cross multiply
    18,751.52x = 25,876.40 × 10,368.16
  4. Step 4: Simplify right side
    18,751.52x = 268,290,655.42
  5. Step 5: Solve for x
    x = 268,290,655.42/18,751.52
  6. Step 6: Final answer
    x = 14,307.68

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