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Finding the Fourth Proportional to 15,395.92, 23,130.87 and 9,860.02

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Solution

The fourth proportional to 15,395.92, 23,130.87 and 9,860.02 is: 14,813.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.92 : 23,130.87 = 9,860.02 : x
  2. Step 2: Convert to fraction form
    15,395.92/23,130.87 = 9,860.02/x
  3. Step 3: Cross multiply
    15,395.92x = 23,130.87 × 9,860.02
  4. Step 4: Simplify right side
    15,395.92x = 228,070,840.82
  5. Step 5: Solve for x
    x = 228,070,840.82/15,395.92
  6. Step 6: Final answer
    x = 14,813.72

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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.