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Finding the Fourth Proportional to 7,013.40, 9,671.58 and 5,440.92

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Solution

The fourth proportional to 7,013.40, 9,671.58 and 5,440.92 is: 7,503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,013.40 : 9,671.58 = 5,440.92 : x
  2. Step 2: Convert to fraction form
    7,013.40/9,671.58 = 5,440.92/x
  3. Step 3: Cross multiply
    7,013.40x = 9,671.58 × 5,440.92
  4. Step 4: Simplify right side
    7,013.40x = 52,622,293.05
  5. Step 5: Solve for x
    x = 52,622,293.05/7,013.40
  6. Step 6: Final answer
    x = 7,503.11

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1.5x scale

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.