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Finding the Fourth Proportional to 19,603.68, 29,434.68 and 19,253.76

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Solution

The fourth proportional to 19,603.68, 29,434.68 and 19,253.76 is: 28,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.68 : 29,434.68 = 19,253.76 : x
  2. Step 2: Convert to fraction form
    19,603.68/29,434.68 = 19,253.76/x
  3. Step 3: Cross multiply
    19,603.68x = 29,434.68 × 19,253.76
  4. Step 4: Simplify right side
    19,603.68x = 566,728,264.40
  5. Step 5: Solve for x
    x = 566,728,264.40/19,603.68
  6. Step 6: Final answer
    x = 28,909.28

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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.