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Finding the Fourth Proportional to 83,749,728.90, 125,628,529.95 and 26,243,876.10

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Solution

The fourth proportional to 83,749,728.90, 125,628,529.95 and 26,243,876.10 is: 39,367,047.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,749,728.90 : 125,628,529.95 = 26,243,876.10 : x
  2. Step 2: Convert to fraction form
    83,749,728.90/125,628,529.95 = 26,243,876.10/x
  3. Step 3: Cross multiply
    83,749,728.90x = 125,628,529.95 × 26,243,876.10
  4. Step 4: Simplify right side
    83,749,728.90x = 3,296,979,574,632,939.50
  5. Step 5: Solve for x
    x = 3,296,979,574,632,939.50/83,749,728.90
  6. Step 6: Final answer
    x = 39,367,047.73

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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.