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Finding the Fourth Proportional to 1,260,579.83, 1,739,611.27 and 687,622.55

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Solution

The fourth proportional to 1,260,579.83, 1,739,611.27 and 687,622.55 is: 948,925.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,579.83 : 1,739,611.27 = 687,622.55 : x
  2. Step 2: Convert to fraction form
    1,260,579.83/1,739,611.27 = 687,622.55/x
  3. Step 3: Cross multiply
    1,260,579.83x = 1,739,611.27 × 687,622.55
  4. Step 4: Simplify right side
    1,260,579.83x = 1,196,195,943,554.22
  5. Step 5: Solve for x
    x = 1,196,195,943,554.22/1,260,579.83
  6. Step 6: Final answer
    x = 948,925.18

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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.