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Finding the Fourth Proportional to 626,511.39, 864,586.56 and 340,031.48

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Solution

The fourth proportional to 626,511.39, 864,586.56 and 340,031.48 is: 469,243.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,511.39 : 864,586.56 = 340,031.48 : x
  2. Step 2: Convert to fraction form
    626,511.39/864,586.56 = 340,031.48/x
  3. Step 3: Cross multiply
    626,511.39x = 864,586.56 × 340,031.48
  4. Step 4: Simplify right side
    626,511.39x = 293,986,643,261.98
  5. Step 5: Solve for x
    x = 293,986,643,261.98/626,511.39
  6. Step 6: Final answer
    x = 469,243.89

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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.