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Finding the Fourth Proportional to 70,501.87, 105,842.97 and 60,570.16

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Solution

The fourth proportional to 70,501.87, 105,842.97 and 60,570.16 is: 90,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,501.87 : 105,842.97 = 60,570.16 : x
  2. Step 2: Convert to fraction form
    70,501.87/105,842.97 = 60,570.16/x
  3. Step 3: Cross multiply
    70,501.87x = 105,842.97 × 60,570.16
  4. Step 4: Simplify right side
    70,501.87x = 6,410,924,795.71
  5. Step 5: Solve for x
    x = 6,410,924,795.71/70,501.87
  6. Step 6: Final answer
    x = 90,932.69

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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.