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Finding the Fourth Proportional to 411,291.01, 616,707.28 and 126,900.82

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Solution

The fourth proportional to 411,291.01, 616,707.28 and 126,900.82 is: 190,280.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,291.01 : 616,707.28 = 126,900.82 : x
  2. Step 2: Convert to fraction form
    411,291.01/616,707.28 = 126,900.82/x
  3. Step 3: Cross multiply
    411,291.01x = 616,707.28 × 126,900.82
  4. Step 4: Simplify right side
    411,291.01x = 78,260,657,672.95
  5. Step 5: Solve for x
    x = 78,260,657,672.95/411,291.01
  6. Step 6: Final answer
    x = 190,280.50

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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.