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Finding the Fourth Proportional to 577,917.07, 866,881.54 and 258,085.21

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Solution

The fourth proportional to 577,917.07, 866,881.54 and 258,085.21 is: 387,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,917.07 : 866,881.54 = 258,085.21 : x
  2. Step 2: Convert to fraction form
    577,917.07/866,881.54 = 258,085.21/x
  3. Step 3: Cross multiply
    577,917.07x = 866,881.54 × 258,085.21
  4. Step 4: Simplify right side
    577,917.07x = 223,729,306,514.93
  5. Step 5: Solve for x
    x = 223,729,306,514.93/577,917.07
  6. Step 6: Final answer
    x = 387,130.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.