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Finding the Fourth Proportional to 655,339.84, 904,188 and 368,843.20

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Solution

The fourth proportional to 655,339.84, 904,188 and 368,843.20 is: 508,901.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,339.84 : 904,188 = 368,843.20 : x
  2. Step 2: Convert to fraction form
    655,339.84/904,188 = 368,843.20/x
  3. Step 3: Cross multiply
    655,339.84x = 904,188 × 368,843.20
  4. Step 4: Simplify right side
    655,339.84x = 333,503,595,321.60
  5. Step 5: Solve for x
    x = 333,503,595,321.60/655,339.84
  6. Step 6: Final answer
    x = 508,901.76

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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.