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Finding the Fourth Proportional to 91,055,409.15, 127,764,550.95 and 91,055,409.15

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Solution

The fourth proportional to 91,055,409.15, 127,764,550.95 and 91,055,409.15 is: 127,764,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,055,409.15 : 127,764,550.95 = 91,055,409.15 : x
  2. Step 2: Convert to fraction form
    91,055,409.15/127,764,550.95 = 91,055,409.15/x
  3. Step 3: Cross multiply
    91,055,409.15x = 127,764,550.95 × 91,055,409.15
  4. Step 4: Simplify right side
    91,055,409.15x = 11,633,653,461,618,272
  5. Step 5: Solve for x
    x = 11,633,653,461,618,272/91,055,409.15
  6. Step 6: Final answer
    x = 127,764,550.95

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.