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Finding the Fourth Proportional to 19,712.70, 29,569.05 and 14,528.70

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Solution

The fourth proportional to 19,712.70, 29,569.05 and 14,528.70 is: 21,793.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,712.70 : 29,569.05 = 14,528.70 : x
  2. Step 2: Convert to fraction form
    19,712.70/29,569.05 = 14,528.70/x
  3. Step 3: Cross multiply
    19,712.70x = 29,569.05 × 14,528.70
  4. Step 4: Simplify right side
    19,712.70x = 429,599,856.74
  5. Step 5: Solve for x
    x = 429,599,856.74/19,712.70
  6. Step 6: Final answer
    x = 21,793.05

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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.