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Finding the Fourth Proportional to 626,215.28, 864,178.72 and 339,735.36

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Solution

The fourth proportional to 626,215.28, 864,178.72 and 339,735.36 is: 468,835.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,215.28 : 864,178.72 = 339,735.36 : x
  2. Step 2: Convert to fraction form
    626,215.28/864,178.72 = 339,735.36/x
  3. Step 3: Cross multiply
    626,215.28x = 864,178.72 × 339,735.36
  4. Step 4: Simplify right side
    626,215.28x = 293,592,068,543.54
  5. Step 5: Solve for x
    x = 293,592,068,543.54/626,215.28
  6. Step 6: Final answer
    x = 468,835.69

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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.