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Finding the Fourth Proportional to 19,892.40, 29,852.40 and 14,972.40

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Solution

The fourth proportional to 19,892.40, 29,852.40 and 14,972.40 is: 22,468.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,892.40 : 29,852.40 = 14,972.40 : x
  2. Step 2: Convert to fraction form
    19,892.40/29,852.40 = 14,972.40/x
  3. Step 3: Cross multiply
    19,892.40x = 29,852.40 × 14,972.40
  4. Step 4: Simplify right side
    19,892.40x = 446,962,073.76
  5. Step 5: Solve for x
    x = 446,962,073.76/19,892.40
  6. Step 6: Final answer
    x = 22,468.99

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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.