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Finding the Fourth Proportional to 1,920,926.04, 2,650,878.89 and 1,061,486.31

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Solution

The fourth proportional to 1,920,926.04, 2,650,878.89 and 1,061,486.31 is: 1,464,851.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,926.04 : 2,650,878.89 = 1,061,486.31 : x
  2. Step 2: Convert to fraction form
    1,920,926.04/2,650,878.89 = 1,061,486.31/x
  3. Step 3: Cross multiply
    1,920,926.04x = 2,650,878.89 × 1,061,486.31
  4. Step 4: Simplify right side
    1,920,926.04x = 2,813,871,645,895.56
  5. Step 5: Solve for x
    x = 2,813,871,645,895.56/1,920,926.04
  6. Step 6: Final answer
    x = 1,464,851.63

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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.