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Finding the Fourth Proportional to 19,114.80, 28,641.02 and 11,703.71

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Solution

The fourth proportional to 19,114.80, 28,641.02 and 11,703.71 is: 17,536.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,114.80 : 28,641.02 = 11,703.71 : x
  2. Step 2: Convert to fraction form
    19,114.80/28,641.02 = 11,703.71/x
  3. Step 3: Cross multiply
    19,114.80x = 28,641.02 × 11,703.71
  4. Step 4: Simplify right side
    19,114.80x = 335,205,990.46
  5. Step 5: Solve for x
    x = 335,205,990.46/19,114.80
  6. Step 6: Final answer
    x = 17,536.46

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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.