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Finding the Fourth Proportional to 14,610.60, 21,915.90 and 4,750.20

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Solution

The fourth proportional to 14,610.60, 21,915.90 and 4,750.20 is: 7,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,610.60 : 21,915.90 = 4,750.20 : x
  2. Step 2: Convert to fraction form
    14,610.60/21,915.90 = 4,750.20/x
  3. Step 3: Cross multiply
    14,610.60x = 21,915.90 × 4,750.20
  4. Step 4: Simplify right side
    14,610.60x = 104,104,908.18
  5. Step 5: Solve for x
    x = 104,104,908.18/14,610.60
  6. Step 6: Final answer
    x = 7,125.30

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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.