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Finding the Fourth Proportional to 265,611.06, 398,415.76 and 83,255.76

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Solution

The fourth proportional to 265,611.06, 398,415.76 and 83,255.76 is: 124,883.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,611.06 : 398,415.76 = 83,255.76 : x
  2. Step 2: Convert to fraction form
    265,611.06/398,415.76 = 83,255.76/x
  3. Step 3: Cross multiply
    265,611.06x = 398,415.76 × 83,255.76
  4. Step 4: Simplify right side
    265,611.06x = 33,170,406,894.78
  5. Step 5: Solve for x
    x = 33,170,406,894.78/265,611.06
  6. Step 6: Final answer
    x = 124,883.38

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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.