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Finding the Fourth Proportional to 657,907.73, 907,915.38 and 356,101.73

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Solution

The fourth proportional to 657,907.73, 907,915.38 and 356,101.73 is: 491,421.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,907.73 : 907,915.38 = 356,101.73 : x
  2. Step 2: Convert to fraction form
    657,907.73/907,915.38 = 356,101.73/x
  3. Step 3: Cross multiply
    657,907.73x = 907,915.38 × 356,101.73
  4. Step 4: Simplify right side
    657,907.73x = 323,310,237,511.61
  5. Step 5: Solve for x
    x = 323,310,237,511.61/657,907.73
  6. Step 6: Final answer
    x = 491,421.86

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Double scale
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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.