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Finding the Fourth Proportional to 686,166.62, 946,833.03 and 380,166.57

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Solution

The fourth proportional to 686,166.62, 946,833.03 and 380,166.57 is: 524,587.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,166.62 : 946,833.03 = 380,166.57 : x
  2. Step 2: Convert to fraction form
    686,166.62/946,833.03 = 380,166.57/x
  3. Step 3: Cross multiply
    686,166.62x = 946,833.03 × 380,166.57
  4. Step 4: Simplify right side
    686,166.62x = 359,954,265,377.81
  5. Step 5: Solve for x
    x = 359,954,265,377.81/686,166.62
  6. Step 6: Final answer
    x = 524,587.26

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1.5x scale

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.