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Finding the Fourth Proportional to 12,417.80, 18,627.03 and 3,652.99

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Solution

The fourth proportional to 12,417.80, 18,627.03 and 3,652.99 is: 5,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.80 : 18,627.03 = 3,652.99 : x
  2. Step 2: Convert to fraction form
    12,417.80/18,627.03 = 3,652.99/x
  3. Step 3: Cross multiply
    12,417.80x = 18,627.03 × 3,652.99
  4. Step 4: Simplify right side
    12,417.80x = 68,044,307.75
  5. Step 5: Solve for x
    x = 68,044,307.75/12,417.80
  6. Step 6: Final answer
    x = 5,479.58

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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.