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Finding the Fourth Proportional to 640,830.35, 884,344.39 and 368,799.14

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Solution

The fourth proportional to 640,830.35, 884,344.39 and 368,799.14 is: 508,941.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,830.35 : 884,344.39 = 368,799.14 : x
  2. Step 2: Convert to fraction form
    640,830.35/884,344.39 = 368,799.14/x
  3. Step 3: Cross multiply
    640,830.35x = 884,344.39 × 368,799.14
  4. Step 4: Simplify right side
    640,830.35x = 326,145,450,495.83
  5. Step 5: Solve for x
    x = 326,145,450,495.83/640,830.35
  6. Step 6: Final answer
    x = 508,941.95

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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.