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Finding the Fourth Proportional to 171,032.40, 256,375.80 and 77,605.20

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Solution

The fourth proportional to 171,032.40, 256,375.80 and 77,605.20 is: 116,329.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,032.40 : 256,375.80 = 77,605.20 : x
  2. Step 2: Convert to fraction form
    171,032.40/256,375.80 = 77,605.20/x
  3. Step 3: Cross multiply
    171,032.40x = 256,375.80 × 77,605.20
  4. Step 4: Simplify right side
    171,032.40x = 19,896,095,234.16
  5. Step 5: Solve for x
    x = 19,896,095,234.16/171,032.40
  6. Step 6: Final answer
    x = 116,329.39

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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.