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Finding the Fourth Proportional to 995,679, 1,374,140.70 and 613,695.96

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Solution

The fourth proportional to 995,679, 1,374,140.70 and 613,695.96 is: 846,964.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    995,679 : 1,374,140.70 = 613,695.96 : x
  2. Step 2: Convert to fraction form
    995,679/1,374,140.70 = 613,695.96/x
  3. Step 3: Cross multiply
    995,679x = 1,374,140.70 × 613,695.96
  4. Step 4: Simplify right side
    995,679x = 843,304,596,061.57
  5. Step 5: Solve for x
    x = 843,304,596,061.57/995,679
  6. Step 6: Final answer
    x = 846,964.33

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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.