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Finding the Fourth Proportional to 1,929,113.77, 2,662,296.66 and 1,069,674.01

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Solution

The fourth proportional to 1,929,113.77, 2,662,296.66 and 1,069,674.01 is: 1,476,216.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929,113.77 : 2,662,296.66 = 1,069,674.01 : x
  2. Step 2: Convert to fraction form
    1,929,113.77/2,662,296.66 = 1,069,674.01/x
  3. Step 3: Cross multiply
    1,929,113.77x = 2,662,296.66 × 1,069,674.01
  4. Step 4: Simplify right side
    1,929,113.77x = 2,847,789,544,111.81
  5. Step 5: Solve for x
    x = 2,847,789,544,111.81/1,929,113.77
  6. Step 6: Final answer
    x = 1,476,216.48

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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.