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Finding the Fourth Proportional to 10,500.58, 15,750.87 and 9,859.06

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Solution

The fourth proportional to 10,500.58, 15,750.87 and 9,859.06 is: 14,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.58 : 15,750.87 = 9,859.06 : x
  2. Step 2: Convert to fraction form
    10,500.58/15,750.87 = 9,859.06/x
  3. Step 3: Cross multiply
    10,500.58x = 15,750.87 × 9,859.06
  4. Step 4: Simplify right side
    10,500.58x = 155,288,772.38
  5. Step 5: Solve for x
    x = 155,288,772.38/10,500.58
  6. Step 6: Final answer
    x = 14,788.59

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Similar ratio
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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.