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Finding the Fourth Proportional to 15,927.60, 23,891.40 and 7,611.60

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Solution

The fourth proportional to 15,927.60, 23,891.40 and 7,611.60 is: 11,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,927.60 : 23,891.40 = 7,611.60 : x
  2. Step 2: Convert to fraction form
    15,927.60/23,891.40 = 7,611.60/x
  3. Step 3: Cross multiply
    15,927.60x = 23,891.40 × 7,611.60
  4. Step 4: Simplify right side
    15,927.60x = 181,851,780.24
  5. Step 5: Solve for x
    x = 181,851,780.24/15,927.60
  6. Step 6: Final answer
    x = 11,417.40

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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.