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Finding the Fourth Proportional to 726,605,570.80, 1,089,908,356.20 and 726,605,570.80

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Solution

The fourth proportional to 726,605,570.80, 1,089,908,356.20 and 726,605,570.80 is: 1,089,908,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,605,570.80 : 1,089,908,356.20 = 726,605,570.80 : x
  2. Step 2: Convert to fraction form
    726,605,570.80/1,089,908,356.20 = 726,605,570.80/x
  3. Step 3: Cross multiply
    726,605,570.80x = 1,089,908,356.20 × 726,605,570.80
  4. Step 4: Simplify right side
    726,605,570.80x = 791,933,483,276,390,656
  5. Step 5: Solve for x
    x = 791,933,483,276,390,656/726,605,570.80
  6. Step 6: Final answer
    x = 1,089,908,356.20

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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.