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Finding the Fourth Proportional to 657,792.75, 907,754.01 and 355,986.75

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Solution

The fourth proportional to 657,792.75, 907,754.01 and 355,986.75 is: 491,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,792.75 : 907,754.01 = 355,986.75 : x
  2. Step 2: Convert to fraction form
    657,792.75/907,754.01 = 355,986.75/x
  3. Step 3: Cross multiply
    657,792.75x = 907,754.01 × 355,986.75
  4. Step 4: Simplify right side
    657,792.75x = 323,148,399,819.37
  5. Step 5: Solve for x
    x = 323,148,399,819.37/657,792.75
  6. Step 6: Final answer
    x = 491,261.72

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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.