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Finding the Fourth Proportional to 70,017.04, 105,069.30 and 28,464.04

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Solution

The fourth proportional to 70,017.04, 105,069.30 and 28,464.04 is: 42,713.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,017.04 : 105,069.30 = 28,464.04 : x
  2. Step 2: Convert to fraction form
    70,017.04/105,069.30 = 28,464.04/x
  3. Step 3: Cross multiply
    70,017.04x = 105,069.30 × 28,464.04
  4. Step 4: Simplify right side
    70,017.04x = 2,990,696,757.97
  5. Step 5: Solve for x
    x = 2,990,696,757.97/70,017.04
  6. Step 6: Final answer
    x = 42,713.84

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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.