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Finding the Fourth Proportional to 1,205,464, 1,663,618.08 and 668,920

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Solution

The fourth proportional to 1,205,464, 1,663,618.08 and 668,920 is: 923,152.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,464 : 1,663,618.08 = 668,920 : x
  2. Step 2: Convert to fraction form
    1,205,464/1,663,618.08 = 668,920/x
  3. Step 3: Cross multiply
    1,205,464x = 1,663,618.08 × 668,920
  4. Step 4: Simplify right side
    1,205,464x = 1,112,827,406,073.60
  5. Step 5: Solve for x
    x = 1,112,827,406,073.60/1,205,464
  6. Step 6: Final answer
    x = 923,152.75

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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.