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Finding the Fourth Proportional to 73,879,969.60, 110,819,954.40 and 49,693,499.20

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Solution

The fourth proportional to 73,879,969.60, 110,819,954.40 and 49,693,499.20 is: 74,540,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,879,969.60 : 110,819,954.40 = 49,693,499.20 : x
  2. Step 2: Convert to fraction form
    73,879,969.60/110,819,954.40 = 49,693,499.20/x
  3. Step 3: Cross multiply
    73,879,969.60x = 110,819,954.40 × 49,693,499.20
  4. Step 4: Simplify right side
    73,879,969.60x = 5,507,031,315,320,437
  5. Step 5: Solve for x
    x = 5,507,031,315,320,437/73,879,969.60
  6. Step 6: Final answer
    x = 74,540,248.80

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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.