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Finding the Fourth Proportional to 559,551.88, 771,259.26 and 395,997.40

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Solution

The fourth proportional to 559,551.88, 771,259.26 and 395,997.40 is: 545,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,551.88 : 771,259.26 = 395,997.40 : x
  2. Step 2: Convert to fraction form
    559,551.88/771,259.26 = 395,997.40/x
  3. Step 3: Cross multiply
    559,551.88x = 771,259.26 × 395,997.40
  4. Step 4: Simplify right side
    559,551.88x = 305,416,661,685.92
  5. Step 5: Solve for x
    x = 305,416,661,685.92/559,551.88
  6. Step 6: Final answer
    x = 545,823.67

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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.