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Finding the Fourth Proportional to 1,920,928.04, 2,650,881.64 and 1,061,488.30

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Solution

The fourth proportional to 1,920,928.04, 2,650,881.64 and 1,061,488.30 is: 1,464,854.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,928.04 : 2,650,881.64 = 1,061,488.30 : x
  2. Step 2: Convert to fraction form
    1,920,928.04/2,650,881.64 = 1,061,488.30/x
  3. Step 3: Cross multiply
    1,920,928.04x = 2,650,881.64 × 1,061,488.30
  4. Step 4: Simplify right side
    1,920,928.04x = 2,813,879,845,544.81
  5. Step 5: Solve for x
    x = 2,813,879,845,544.81/1,920,928.04
  6. Step 6: Final answer
    x = 1,464,854.38

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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.