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Finding the Fourth Proportional to 540,921.84, 746,220.78 and 349,996.74

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Solution

The fourth proportional to 540,921.84, 746,220.78 and 349,996.74 is: 482,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,921.84 : 746,220.78 = 349,996.74 : x
  2. Step 2: Convert to fraction form
    540,921.84/746,220.78 = 349,996.74/x
  3. Step 3: Cross multiply
    540,921.84x = 746,220.78 × 349,996.74
  4. Step 4: Simplify right side
    540,921.84x = 261,174,840,320.26
  5. Step 5: Solve for x
    x = 261,174,840,320.26/540,921.84
  6. Step 6: Final answer
    x = 482,832.86

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Half scale
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Double scale
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Similar ratio
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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.