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Finding the Fourth Proportional to 626,833.37, 865,005.79 and 340,346.90

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Solution

The fourth proportional to 626,833.37, 865,005.79 and 340,346.90 is: 469,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,833.37 : 865,005.79 = 340,346.90 : x
  2. Step 2: Convert to fraction form
    626,833.37/865,005.79 = 340,346.90/x
  3. Step 3: Cross multiply
    626,833.37x = 865,005.79 × 340,346.90
  4. Step 4: Simplify right side
    626,833.37x = 294,402,039,108.55
  5. Step 5: Solve for x
    x = 294,402,039,108.55/626,833.37
  6. Step 6: Final answer
    x = 469,665.55

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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.