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Finding the Fourth Proportional to 951,686.20, 1,312,638.78 and 808,219

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Solution

The fourth proportional to 951,686.20, 1,312,638.78 and 808,219 is: 1,114,757.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    951,686.20 : 1,312,638.78 = 808,219 : x
  2. Step 2: Convert to fraction form
    951,686.20/1,312,638.78 = 808,219/x
  3. Step 3: Cross multiply
    951,686.20x = 1,312,638.78 × 808,219
  4. Step 4: Simplify right side
    951,686.20x = 1,060,899,602,132.82
  5. Step 5: Solve for x
    x = 1,060,899,602,132.82/951,686.20
  6. Step 6: Final answer
    x = 1,114,757.79

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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.