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Finding the Fourth Proportional to 626,412.78, 864,820.86 and 411,922.74

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Solution

The fourth proportional to 626,412.78, 864,820.86 and 411,922.74 is: 568,697.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,412.78 : 864,820.86 = 411,922.74 : x
  2. Step 2: Convert to fraction form
    626,412.78/864,820.86 = 411,922.74/x
  3. Step 3: Cross multiply
    626,412.78x = 864,820.86 × 411,922.74
  4. Step 4: Simplify right side
    626,412.78x = 356,239,378,260.36
  5. Step 5: Solve for x
    x = 356,239,378,260.36/626,412.78
  6. Step 6: Final answer
    x = 568,697.49

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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.