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Finding the Fourth Proportional to 19,061.80, 28,603.94 and 7,967.63

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Solution

The fourth proportional to 19,061.80, 28,603.94 and 7,967.63 is: 11,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,061.80 : 28,603.94 = 7,967.63 : x
  2. Step 2: Convert to fraction form
    19,061.80/28,603.94 = 7,967.63/x
  3. Step 3: Cross multiply
    19,061.80x = 28,603.94 × 7,967.63
  4. Step 4: Simplify right side
    19,061.80x = 227,905,642.13
  5. Step 5: Solve for x
    x = 227,905,642.13/19,061.80
  6. Step 6: Final answer
    x = 11,956.15

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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.