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Finding the Fourth Proportional to 19,976.82, 30,006.53 and 19,312.82

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Solution

The fourth proportional to 19,976.82, 30,006.53 and 19,312.82 is: 29,009.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.82 : 30,006.53 = 19,312.82 : x
  2. Step 2: Convert to fraction form
    19,976.82/30,006.53 = 19,312.82/x
  3. Step 3: Cross multiply
    19,976.82x = 30,006.53 × 19,312.82
  4. Step 4: Simplify right side
    19,976.82x = 579,510,712.71
  5. Step 5: Solve for x
    x = 579,510,712.71/19,976.82
  6. Step 6: Final answer
    x = 29,009.16

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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.