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Finding the Fourth Proportional to 1,923,070.64, 2,650,892.28 and 1,438,902.32

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Solution

The fourth proportional to 1,923,070.64, 2,650,892.28 and 1,438,902.32 is: 1,983,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923,070.64 : 2,650,892.28 = 1,438,902.32 : x
  2. Step 2: Convert to fraction form
    1,923,070.64/2,650,892.28 = 1,438,902.32/x
  3. Step 3: Cross multiply
    1,923,070.64x = 2,650,892.28 × 1,438,902.32
  4. Step 4: Simplify right side
    1,923,070.64x = 3,814,375,051,762.09
  5. Step 5: Solve for x
    x = 3,814,375,051,762.09/1,923,070.64
  6. Step 6: Final answer
    x = 1,983,481.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.