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Finding the Fourth Proportional to 31,887.72, 47,833.56 and 9,702.72

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Solution

The fourth proportional to 31,887.72, 47,833.56 and 9,702.72 is: 14,554.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,887.72 : 47,833.56 = 9,702.72 : x
  2. Step 2: Convert to fraction form
    31,887.72/47,833.56 = 9,702.72/x
  3. Step 3: Cross multiply
    31,887.72x = 47,833.56 × 9,702.72
  4. Step 4: Simplify right side
    31,887.72x = 464,115,639.28
  5. Step 5: Solve for x
    x = 464,115,639.28/31,887.72
  6. Step 6: Final answer
    x = 14,554.68

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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.