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Finding the Fourth Proportional to 1,265,447.76, 1,746,318 and 692,487.96

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Solution

The fourth proportional to 1,265,447.76, 1,746,318 and 692,487.96 is: 955,633.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,447.76 : 1,746,318 = 692,487.96 : x
  2. Step 2: Convert to fraction form
    1,265,447.76/1,746,318 = 692,487.96/x
  3. Step 3: Cross multiply
    1,265,447.76x = 1,746,318 × 692,487.96
  4. Step 4: Simplify right side
    1,265,447.76x = 1,209,304,189,331.28
  5. Step 5: Solve for x
    x = 1,209,304,189,331.28/1,265,447.76
  6. Step 6: Final answer
    x = 955,633.43

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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.