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Finding the Fourth Proportional to 115,303.78, 172,973.52 and 48,744.16

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Solution

The fourth proportional to 115,303.78, 172,973.52 and 48,744.16 is: 73,123.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,303.78 : 172,973.52 = 48,744.16 : x
  2. Step 2: Convert to fraction form
    115,303.78/172,973.52 = 48,744.16/x
  3. Step 3: Cross multiply
    115,303.78x = 172,973.52 × 48,744.16
  4. Step 4: Simplify right side
    115,303.78x = 8,431,448,934.64
  5. Step 5: Solve for x
    x = 8,431,448,934.64/115,303.78
  6. Step 6: Final answer
    x = 73,123.79

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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.