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Finding the Fourth Proportional to 72,447.40, 108,671.10 and 58,623.40

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Solution

The fourth proportional to 72,447.40, 108,671.10 and 58,623.40 is: 87,935.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,447.40 : 108,671.10 = 58,623.40 : x
  2. Step 2: Convert to fraction form
    72,447.40/108,671.10 = 58,623.40/x
  3. Step 3: Cross multiply
    72,447.40x = 108,671.10 × 58,623.40
  4. Step 4: Simplify right side
    72,447.40x = 6,370,669,363.74
  5. Step 5: Solve for x
    x = 6,370,669,363.74/72,447.40
  6. Step 6: Final answer
    x = 87,935.10

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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.