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Finding the Fourth Proportional to 70,436.39, 105,654.58 and 36,695.42

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Solution

The fourth proportional to 70,436.39, 105,654.58 and 36,695.42 is: 55,043.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,436.39 : 105,654.58 = 36,695.42 : x
  2. Step 2: Convert to fraction form
    70,436.39/105,654.58 = 36,695.42/x
  3. Step 3: Cross multiply
    70,436.39x = 105,654.58 × 36,695.42
  4. Step 4: Simplify right side
    70,436.39x = 3,877,039,188.02
  5. Step 5: Solve for x
    x = 3,877,039,188.02/70,436.39
  6. Step 6: Final answer
    x = 55,043.13

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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.