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Finding the Fourth Proportional to 626,917.51, 865,200.05 and 355,033.32

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Solution

The fourth proportional to 626,917.51, 865,200.05 and 355,033.32 is: 489,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,917.51 : 865,200.05 = 355,033.32 : x
  2. Step 2: Convert to fraction form
    626,917.51/865,200.05 = 355,033.32/x
  3. Step 3: Cross multiply
    626,917.51x = 865,200.05 × 355,033.32
  4. Step 4: Simplify right side
    626,917.51x = 307,174,846,215.67
  5. Step 5: Solve for x
    x = 307,174,846,215.67/626,917.51
  6. Step 6: Final answer
    x = 489,976.50

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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.