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Finding the Fourth Proportional to 577,976.80, 866,971.58 and 258,144.91

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Solution

The fourth proportional to 577,976.80, 866,971.58 and 258,144.91 is: 387,220.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,976.80 : 866,971.58 = 258,144.91 : x
  2. Step 2: Convert to fraction form
    577,976.80/866,971.58 = 258,144.91/x
  3. Step 3: Cross multiply
    577,976.80x = 866,971.58 × 258,144.91
  4. Step 4: Simplify right side
    577,976.80x = 223,804,300,491.66
  5. Step 5: Solve for x
    x = 223,804,300,491.66/577,976.80
  6. Step 6: Final answer
    x = 387,220.21

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1.5x scale

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.