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Finding the Fourth Proportional to 91,055,365.40, 127,764,489.70 and 91,055,365.40

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Solution

The fourth proportional to 91,055,365.40, 127,764,489.70 and 91,055,365.40 is: 127,764,489.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,055,365.40 : 127,764,489.70 = 91,055,365.40 : x
  2. Step 2: Convert to fraction form
    91,055,365.40/127,764,489.70 = 91,055,365.40/x
  3. Step 3: Cross multiply
    91,055,365.40x = 127,764,489.70 × 91,055,365.40
  4. Step 4: Simplify right side
    91,055,365.40x = 11,633,642,294,778,038
  5. Step 5: Solve for x
    x = 11,633,642,294,778,038/91,055,365.40
  6. Step 6: Final answer
    x = 127,764,489.70

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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.