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Finding the Fourth Proportional to 88,705.12, 122,410 and 52,876.68

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Solution

The fourth proportional to 88,705.12, 122,410 and 52,876.68 is: 72,967.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,705.12 : 122,410 = 52,876.68 : x
  2. Step 2: Convert to fraction form
    88,705.12/122,410 = 52,876.68/x
  3. Step 3: Cross multiply
    88,705.12x = 122,410 × 52,876.68
  4. Step 4: Simplify right side
    88,705.12x = 6,472,634,398.80
  5. Step 5: Solve for x
    x = 6,472,634,398.80/88,705.12
  6. Step 6: Final answer
    x = 72,967.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.