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Finding the Fourth Proportional to 1,288,303.22, 1,923,779.31 and 1,052,114.42

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Solution

The fourth proportional to 1,288,303.22, 1,923,779.31 and 1,052,114.42 is: 1,571,086.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,303.22 : 1,923,779.31 = 1,052,114.42 : x
  2. Step 2: Convert to fraction form
    1,288,303.22/1,923,779.31 = 1,052,114.42/x
  3. Step 3: Cross multiply
    1,288,303.22x = 1,923,779.31 × 1,052,114.42
  4. Step 4: Simplify right side
    1,288,303.22x = 2,024,035,947,688.08
  5. Step 5: Solve for x
    x = 2,024,035,947,688.08/1,288,303.22
  6. Step 6: Final answer
    x = 1,571,086.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.