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Finding the Fourth Proportional to 5,125.68, 7,076.16 and 5,018.76

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Solution

The fourth proportional to 5,125.68, 7,076.16 and 5,018.76 is: 6,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.68 : 7,076.16 = 5,018.76 : x
  2. Step 2: Convert to fraction form
    5,125.68/7,076.16 = 5,018.76/x
  3. Step 3: Cross multiply
    5,125.68x = 7,076.16 × 5,018.76
  4. Step 4: Simplify right side
    5,125.68x = 35,513,548.76
  5. Step 5: Solve for x
    x = 35,513,548.76/5,125.68
  6. Step 6: Final answer
    x = 6,928.55

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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.