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Finding the Fourth Proportional to 10,671.90, 15,971.40 and 9,359.70

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Solution

The fourth proportional to 10,671.90, 15,971.40 and 9,359.70 is: 14,007.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,671.90 : 15,971.40 = 9,359.70 : x
  2. Step 2: Convert to fraction form
    10,671.90/15,971.40 = 9,359.70/x
  3. Step 3: Cross multiply
    10,671.90x = 15,971.40 × 9,359.70
  4. Step 4: Simplify right side
    10,671.90x = 149,487,512.58
  5. Step 5: Solve for x
    x = 149,487,512.58/10,671.90
  6. Step 6: Final answer
    x = 14,007.58

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1.5x scale

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.