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Finding the Fourth Proportional to 626,833.65, 865,006.17 and 340,347.18

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Solution

The fourth proportional to 626,833.65, 865,006.17 and 340,347.18 is: 469,665.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,833.65 : 865,006.17 = 340,347.18 : x
  2. Step 2: Convert to fraction form
    626,833.65/865,006.17 = 340,347.18/x
  3. Step 3: Cross multiply
    626,833.65x = 865,006.17 × 340,347.18
  4. Step 4: Simplify right side
    626,833.65x = 294,402,410,642.10
  5. Step 5: Solve for x
    x = 294,402,410,642.10/626,833.65
  6. Step 6: Final answer
    x = 469,665.93

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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.