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Finding the Fourth Proportional to 47,390.46, 65,398.86 and 25,880.50

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Solution

The fourth proportional to 47,390.46, 65,398.86 and 25,880.50 is: 35,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,390.46 : 65,398.86 = 25,880.50 : x
  2. Step 2: Convert to fraction form
    47,390.46/65,398.86 = 25,880.50/x
  3. Step 3: Cross multiply
    47,390.46x = 65,398.86 × 25,880.50
  4. Step 4: Simplify right side
    47,390.46x = 1,692,555,196.23
  5. Step 5: Solve for x
    x = 1,692,555,196.23/47,390.46
  6. Step 6: Final answer
    x = 35,715.10

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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.