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Finding the Fourth Proportional to 1,751,669.11, 2,417,271.15 and 987,723.28

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Solution

The fourth proportional to 1,751,669.11, 2,417,271.15 and 987,723.28 is: 1,363,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751,669.11 : 2,417,271.15 = 987,723.28 : x
  2. Step 2: Convert to fraction form
    1,751,669.11/2,417,271.15 = 987,723.28/x
  3. Step 3: Cross multiply
    1,751,669.11x = 2,417,271.15 × 987,723.28
  4. Step 4: Simplify right side
    1,751,669.11x = 2,387,594,988,927.37
  5. Step 5: Solve for x
    x = 2,387,594,988,927.37/1,751,669.11
  6. Step 6: Final answer
    x = 1,363,039.96

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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.