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Finding the Fourth Proportional to 626,837.76, 864,374.76 and 445,360.68

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Solution

The fourth proportional to 626,837.76, 864,374.76 and 445,360.68 is: 614,127.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,837.76 : 864,374.76 = 445,360.68 : x
  2. Step 2: Convert to fraction form
    626,837.76/864,374.76 = 445,360.68/x
  3. Step 3: Cross multiply
    626,837.76x = 864,374.76 × 445,360.68
  4. Step 4: Simplify right side
    626,837.76x = 384,958,530,888.44
  5. Step 5: Solve for x
    x = 384,958,530,888.44/626,837.76
  6. Step 6: Final answer
    x = 614,127.86

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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.