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Finding the Fourth Proportional to 105,895.97, 158,808.70 and 42,699.77

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Solution

The fourth proportional to 105,895.97, 158,808.70 and 42,699.77 is: 64,035.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,895.97 : 158,808.70 = 42,699.77 : x
  2. Step 2: Convert to fraction form
    105,895.97/158,808.70 = 42,699.77/x
  3. Step 3: Cross multiply
    105,895.97x = 158,808.70 × 42,699.77
  4. Step 4: Simplify right side
    105,895.97x = 6,781,094,964.00
  5. Step 5: Solve for x
    x = 6,781,094,964.00/105,895.97
  6. Step 6: Final answer
    x = 64,035.44

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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.