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Finding the Fourth Proportional to 72,582,112.80, 108,873,169.20 and 48,395,642.40

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Solution

The fourth proportional to 72,582,112.80, 108,873,169.20 and 48,395,642.40 is: 72,593,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,582,112.80 : 108,873,169.20 = 48,395,642.40 : x
  2. Step 2: Convert to fraction form
    72,582,112.80/108,873,169.20 = 48,395,642.40/x
  3. Step 3: Cross multiply
    72,582,112.80x = 108,873,169.20 × 48,395,642.40
  4. Step 4: Simplify right side
    72,582,112.80x = 5,268,986,963,557,894
  5. Step 5: Solve for x
    x = 5,268,986,963,557,894/72,582,112.80
  6. Step 6: Final answer
    x = 72,593,463.60

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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.