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Finding the Fourth Proportional to 19,046.34, 28,564.88 and 7,953.12

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Solution

The fourth proportional to 19,046.34, 28,564.88 and 7,953.12 is: 11,927.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,046.34 : 28,564.88 = 7,953.12 : x
  2. Step 2: Convert to fraction form
    19,046.34/28,564.88 = 7,953.12/x
  3. Step 3: Cross multiply
    19,046.34x = 28,564.88 × 7,953.12
  4. Step 4: Simplify right side
    19,046.34x = 227,179,878.66
  5. Step 5: Solve for x
    x = 227,179,878.66/19,046.34
  6. Step 6: Final answer
    x = 11,927.74

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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.