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Finding the Fourth Proportional to 626,998.16, 865,262.54 and 340,520.30

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Solution

The fourth proportional to 626,998.16, 865,262.54 and 340,520.30 is: 469,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,998.16 : 865,262.54 = 340,520.30 : x
  2. Step 2: Convert to fraction form
    626,998.16/865,262.54 = 340,520.30/x
  3. Step 3: Cross multiply
    626,998.16x = 865,262.54 × 340,520.30
  4. Step 4: Simplify right side
    626,998.16x = 294,639,457,035.73
  5. Step 5: Solve for x
    x = 294,639,457,035.73/626,998.16
  6. Step 6: Final answer
    x = 469,920.77

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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.