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Finding the Fourth Proportional to 677,894.40, 935,452.80 and 371,908.80

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Solution

The fourth proportional to 677,894.40, 935,452.80 and 371,908.80 is: 513,211.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,894.40 : 935,452.80 = 371,908.80 : x
  2. Step 2: Convert to fraction form
    677,894.40/935,452.80 = 371,908.80/x
  3. Step 3: Cross multiply
    677,894.40x = 935,452.80 × 371,908.80
  4. Step 4: Simplify right side
    677,894.40x = 347,903,128,304.64
  5. Step 5: Solve for x
    x = 347,903,128,304.64/677,894.40
  6. Step 6: Final answer
    x = 513,211.39

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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.