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Finding the Fourth Proportional to 4,671.05, 7,005.20 and 2,478.60

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Solution

The fourth proportional to 4,671.05, 7,005.20 and 2,478.60 is: 3,717.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,671.05 : 7,005.20 = 2,478.60 : x
  2. Step 2: Convert to fraction form
    4,671.05/7,005.20 = 2,478.60/x
  3. Step 3: Cross multiply
    4,671.05x = 7,005.20 × 2,478.60
  4. Step 4: Simplify right side
    4,671.05x = 17,363,076.33
  5. Step 5: Solve for x
    x = 17,363,076.33/4,671.05
  6. Step 6: Final answer
    x = 3,717.17

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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.