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Finding the Fourth Proportional to 70,436.71, 105,620.57 and 34,856.95

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Solution

The fourth proportional to 70,436.71, 105,620.57 and 34,856.95 is: 52,268.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,436.71 : 105,620.57 = 34,856.95 : x
  2. Step 2: Convert to fraction form
    70,436.71/105,620.57 = 34,856.95/x
  3. Step 3: Cross multiply
    70,436.71x = 105,620.57 × 34,856.95
  4. Step 4: Simplify right side
    70,436.71x = 3,681,610,927.46
  5. Step 5: Solve for x
    x = 3,681,610,927.46/70,436.71
  6. Step 6: Final answer
    x = 52,268.35

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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.