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Finding the Fourth Proportional to 70,718.40, 106,065.45 and 26,322.30

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Solution

The fourth proportional to 70,718.40, 106,065.45 and 26,322.30 is: 39,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,718.40 : 106,065.45 = 26,322.30 : x
  2. Step 2: Convert to fraction form
    70,718.40/106,065.45 = 26,322.30/x
  3. Step 3: Cross multiply
    70,718.40x = 106,065.45 × 26,322.30
  4. Step 4: Simplify right side
    70,718.40x = 2,791,886,594.54
  5. Step 5: Solve for x
    x = 2,791,886,594.54/70,718.40
  6. Step 6: Final answer
    x = 39,478.93

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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.