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Finding the Fourth Proportional to 10,862.76, 14,990.60 and 5,894.76

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Solution

The fourth proportional to 10,862.76, 14,990.60 and 5,894.76 is: 8,134.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,862.76 : 14,990.60 = 5,894.76 : x
  2. Step 2: Convert to fraction form
    10,862.76/14,990.60 = 5,894.76/x
  3. Step 3: Cross multiply
    10,862.76x = 14,990.60 × 5,894.76
  4. Step 4: Simplify right side
    10,862.76x = 88,365,989.26
  5. Step 5: Solve for x
    x = 88,365,989.26/10,862.76
  6. Step 6: Final answer
    x = 8,134.76

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Half scale
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Double scale
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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.