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Finding the Fourth Proportional to 1,397,552.76, 1,928,629.34 and 793,973.88

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Solution

The fourth proportional to 1,397,552.76, 1,928,629.34 and 793,973.88 is: 1,095,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,552.76 : 1,928,629.34 = 793,973.88 : x
  2. Step 2: Convert to fraction form
    1,397,552.76/1,928,629.34 = 793,973.88/x
  3. Step 3: Cross multiply
    1,397,552.76x = 1,928,629.34 × 793,973.88
  4. Step 4: Simplify right side
    1,397,552.76x = 1,531,281,320,161.64
  5. Step 5: Solve for x
    x = 1,531,281,320,161.64/1,397,552.76
  6. Step 6: Final answer
    x = 1,095,687.66

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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.