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Finding the Fourth Proportional to 9,907.97, 14,808.65 and 8,648.55

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Solution

The fourth proportional to 9,907.97, 14,808.65 and 8,648.55 is: 12,926.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907.97 : 14,808.65 = 8,648.55 : x
  2. Step 2: Convert to fraction form
    9,907.97/14,808.65 = 8,648.55/x
  3. Step 3: Cross multiply
    9,907.97x = 14,808.65 × 8,648.55
  4. Step 4: Simplify right side
    9,907.97x = 128,073,306.71
  5. Step 5: Solve for x
    x = 128,073,306.71/9,907.97
  6. Step 6: Final answer
    x = 12,926.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.