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Finding the Fourth Proportional to 91,036,039.20, 136,554,058.80 and 91,036,039.20

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Solution

The fourth proportional to 91,036,039.20, 136,554,058.80 and 91,036,039.20 is: 136,554,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,036,039.20 : 136,554,058.80 = 91,036,039.20 : x
  2. Step 2: Convert to fraction form
    91,036,039.20/136,554,058.80 = 91,036,039.20/x
  3. Step 3: Cross multiply
    91,036,039.20x = 136,554,058.80 × 91,036,039.20
  4. Step 4: Simplify right side
    91,036,039.20x = 12,431,340,649,835,906
  5. Step 5: Solve for x
    x = 12,431,340,649,835,906/91,036,039.20
  6. Step 6: Final answer
    x = 136,554,058.80

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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.