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Finding the Fourth Proportional to 1,694,672, 2,338,854.88 and 979,280

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Solution

The fourth proportional to 1,694,672, 2,338,854.88 and 979,280 is: 1,351,526.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,694,672 : 2,338,854.88 = 979,280 : x
  2. Step 2: Convert to fraction form
    1,694,672/2,338,854.88 = 979,280/x
  3. Step 3: Cross multiply
    1,694,672x = 2,338,854.88 × 979,280
  4. Step 4: Simplify right side
    1,694,672x = 2,290,393,806,886.40
  5. Step 5: Solve for x
    x = 2,290,393,806,886.40/1,694,672
  6. Step 6: Final answer
    x = 1,351,526.32

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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.