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Finding the Fourth Proportional to 692,223.88, 955,087.86 and 405,590.28

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Solution

The fourth proportional to 692,223.88, 955,087.86 and 405,590.28 is: 559,608.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,223.88 : 955,087.86 = 405,590.28 : x
  2. Step 2: Convert to fraction form
    692,223.88/955,087.86 = 405,590.28/x
  3. Step 3: Cross multiply
    692,223.88x = 955,087.86 × 405,590.28
  4. Step 4: Simplify right side
    692,223.88x = 387,374,352,562.00
  5. Step 5: Solve for x
    x = 387,374,352,562.00/692,223.88
  6. Step 6: Final answer
    x = 559,608.48

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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.