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Finding the Fourth Proportional to 513,681.80, 770,525.10 and 181,257.80

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Solution

The fourth proportional to 513,681.80, 770,525.10 and 181,257.80 is: 271,887.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,681.80 : 770,525.10 = 181,257.80 : x
  2. Step 2: Convert to fraction form
    513,681.80/770,525.10 = 181,257.80/x
  3. Step 3: Cross multiply
    513,681.80x = 770,525.10 × 181,257.80
  4. Step 4: Simplify right side
    513,681.80x = 139,663,684,470.78
  5. Step 5: Solve for x
    x = 139,663,684,470.78/513,681.80
  6. Step 6: Final answer
    x = 271,887.55

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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.