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Finding the Fourth Proportional to 1,365,844.43, 1,884,815.90 and 753,984.05

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Solution

The fourth proportional to 1,365,844.43, 1,884,815.90 and 753,984.05 is: 1,040,470.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365,844.43 : 1,884,815.90 = 753,984.05 : x
  2. Step 2: Convert to fraction form
    1,365,844.43/1,884,815.90 = 753,984.05/x
  3. Step 3: Cross multiply
    1,365,844.43x = 1,884,815.90 × 753,984.05
  4. Step 4: Simplify right side
    1,365,844.43x = 1,421,121,126,728.51
  5. Step 5: Solve for x
    x = 1,421,121,126,728.51/1,365,844.43
  6. Step 6: Final answer
    x = 1,040,470.72

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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.