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Finding the Fourth Proportional to 626,965.92, 865,219.32 and 340,491.60

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Solution

The fourth proportional to 626,965.92, 865,219.32 and 340,491.60 is: 469,881.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,965.92 : 865,219.32 = 340,491.60 : x
  2. Step 2: Convert to fraction form
    626,965.92/865,219.32 = 340,491.60/x
  3. Step 3: Cross multiply
    626,965.92x = 865,219.32 × 340,491.60
  4. Step 4: Simplify right side
    626,965.92x = 294,599,910,617.71
  5. Step 5: Solve for x
    x = 294,599,910,617.71/626,965.92
  6. Step 6: Final answer
    x = 469,881.86

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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.