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Finding the Fourth Proportional to 58,872.40, 88,276.20 and 19,409.20

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Solution

The fourth proportional to 58,872.40, 88,276.20 and 19,409.20 is: 29,103.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,872.40 : 88,276.20 = 19,409.20 : x
  2. Step 2: Convert to fraction form
    58,872.40/88,276.20 = 19,409.20/x
  3. Step 3: Cross multiply
    58,872.40x = 88,276.20 × 19,409.20
  4. Step 4: Simplify right side
    58,872.40x = 1,713,370,421.04
  5. Step 5: Solve for x
    x = 1,713,370,421.04/58,872.40
  6. Step 6: Final answer
    x = 29,103.12

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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.