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Finding the Fourth Proportional to 70,390.32, 105,604.92 and 62,653.20

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Solution

The fourth proportional to 70,390.32, 105,604.92 and 62,653.20 is: 93,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,390.32 : 105,604.92 = 62,653.20 : x
  2. Step 2: Convert to fraction form
    70,390.32/105,604.92 = 62,653.20/x
  3. Step 3: Cross multiply
    70,390.32x = 105,604.92 × 62,653.20
  4. Step 4: Simplify right side
    70,390.32x = 6,616,486,173.74
  5. Step 5: Solve for x
    x = 6,616,486,173.74/70,390.32
  6. Step 6: Final answer
    x = 93,997.10

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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.