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Finding the Fourth Proportional to 1,328,772, 1,994,560.80 and 619,484.16

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Solution

The fourth proportional to 1,328,772, 1,994,560.80 and 619,484.16 is: 929,880.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,772 : 1,994,560.80 = 619,484.16 : x
  2. Step 2: Convert to fraction form
    1,328,772/1,994,560.80 = 619,484.16/x
  3. Step 3: Cross multiply
    1,328,772x = 1,994,560.80 × 619,484.16
  4. Step 4: Simplify right side
    1,328,772x = 1,235,598,821,756.93
  5. Step 5: Solve for x
    x = 1,235,598,821,756.93/1,328,772
  6. Step 6: Final answer
    x = 929,880.24

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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.