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Finding the Fourth Proportional to 72,502,693.60, 108,754,040.40 and 50,961,618.40

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Solution

The fourth proportional to 72,502,693.60, 108,754,040.40 and 50,961,618.40 is: 76,442,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,502,693.60 : 108,754,040.40 = 50,961,618.40 : x
  2. Step 2: Convert to fraction form
    72,502,693.60/108,754,040.40 = 50,961,618.40/x
  3. Step 3: Cross multiply
    72,502,693.60x = 108,754,040.40 × 50,961,618.40
  4. Step 4: Simplify right side
    72,502,693.60x = 5,542,281,906,322,984
  5. Step 5: Solve for x
    x = 5,542,281,906,322,984/72,502,693.60
  6. Step 6: Final answer
    x = 76,442,427.60

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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.