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Finding the Fourth Proportional to 70,559.49, 105,812.55 and 28,425.27

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Solution

The fourth proportional to 70,559.49, 105,812.55 and 28,425.27 is: 42,627.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,559.49 : 105,812.55 = 28,425.27 : x
  2. Step 2: Convert to fraction form
    70,559.49/105,812.55 = 28,425.27/x
  3. Step 3: Cross multiply
    70,559.49x = 105,812.55 × 28,425.27
  4. Step 4: Simplify right side
    70,559.49x = 3,007,750,303.14
  5. Step 5: Solve for x
    x = 3,007,750,303.14/70,559.49
  6. Step 6: Final answer
    x = 42,627.15

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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.