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Finding the Fourth Proportional to 96,812.80, 145,240.80 and 37,643.20

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Solution

The fourth proportional to 96,812.80, 145,240.80 and 37,643.20 is: 56,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,812.80 : 145,240.80 = 37,643.20 : x
  2. Step 2: Convert to fraction form
    96,812.80/145,240.80 = 37,643.20/x
  3. Step 3: Cross multiply
    96,812.80x = 145,240.80 × 37,643.20
  4. Step 4: Simplify right side
    96,812.80x = 5,467,328,482.56
  5. Step 5: Solve for x
    x = 5,467,328,482.56/96,812.80
  6. Step 6: Final answer
    x = 56,473.20

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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.