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Finding the Fourth Proportional to 910,410.90, 1,272,213.30 and 910,410.90

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Solution

The fourth proportional to 910,410.90, 1,272,213.30 and 910,410.90 is: 1,272,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,410.90 : 1,272,213.30 = 910,410.90 : x
  2. Step 2: Convert to fraction form
    910,410.90/1,272,213.30 = 910,410.90/x
  3. Step 3: Cross multiply
    910,410.90x = 1,272,213.30 × 910,410.90
  4. Step 4: Simplify right side
    910,410.90x = 1,158,236,855,444.97
  5. Step 5: Solve for x
    x = 1,158,236,855,444.97/910,410.90
  6. Step 6: Final answer
    x = 1,272,213.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.