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Finding the Fourth Proportional to 817,544.40, 1,128,233.16 and 495,186

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Solution

The fourth proportional to 817,544.40, 1,128,233.16 and 495,186 is: 683,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,544.40 : 1,128,233.16 = 495,186 : x
  2. Step 2: Convert to fraction form
    817,544.40/1,128,233.16 = 495,186/x
  3. Step 3: Cross multiply
    817,544.40x = 1,128,233.16 × 495,186
  4. Step 4: Simplify right side
    817,544.40x = 558,685,265,567.76
  5. Step 5: Solve for x
    x = 558,685,265,567.76/817,544.40
  6. Step 6: Final answer
    x = 683,369.94

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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.