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Finding the Fourth Proportional to 73,887,282.80, 110,830,924.20 and 72,879,513.20

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Solution

The fourth proportional to 73,887,282.80, 110,830,924.20 and 72,879,513.20 is: 109,319,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,887,282.80 : 110,830,924.20 = 72,879,513.20 : x
  2. Step 2: Convert to fraction form
    73,887,282.80/110,830,924.20 = 72,879,513.20/x
  3. Step 3: Cross multiply
    73,887,282.80x = 110,830,924.20 × 72,879,513.20
  4. Step 4: Simplify right side
    73,887,282.80x = 8,077,303,803,202,100
  5. Step 5: Solve for x
    x = 8,077,303,803,202,100/73,887,282.80
  6. Step 6: Final answer
    x = 109,319,269.80

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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.