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Finding the Fourth Proportional to 7,385.52, 10,235.98 and 7,247.28

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Solution

The fourth proportional to 7,385.52, 10,235.98 and 7,247.28 is: 10,044.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.52 : 10,235.98 = 7,247.28 : x
  2. Step 2: Convert to fraction form
    7,385.52/10,235.98 = 7,247.28/x
  3. Step 3: Cross multiply
    7,385.52x = 10,235.98 × 7,247.28
  4. Step 4: Simplify right side
    7,385.52x = 74,183,013.13
  5. Step 5: Solve for x
    x = 74,183,013.13/7,385.52
  6. Step 6: Final answer
    x = 10,044.39

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Half scale
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Double scale
Find fourth proportional to 7,386.52, 10,237.37 and 7,248.28
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.