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Finding the Fourth Proportional to 626,411.78, 864,819.48 and 411,921.74

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Solution

The fourth proportional to 626,411.78, 864,819.48 and 411,921.74 is: 568,696.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,411.78 : 864,819.48 = 411,921.74 : x
  2. Step 2: Convert to fraction form
    626,411.78/864,819.48 = 411,921.74/x
  3. Step 3: Cross multiply
    626,411.78x = 864,819.48 × 411,921.74
  4. Step 4: Simplify right side
    626,411.78x = 356,237,944,987.50
  5. Step 5: Solve for x
    x = 356,237,944,987.50/626,411.78
  6. Step 6: Final answer
    x = 568,696.11

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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.