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Finding the Fourth Proportional to 121,905.61, 182,866.64 and 47,026.38

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Solution

The fourth proportional to 121,905.61, 182,866.64 and 47,026.38 is: 70,542.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,905.61 : 182,866.64 = 47,026.38 : x
  2. Step 2: Convert to fraction form
    121,905.61/182,866.64 = 47,026.38/x
  3. Step 3: Cross multiply
    121,905.61x = 182,866.64 × 47,026.38
  4. Step 4: Simplify right side
    121,905.61x = 8,599,556,101.96
  5. Step 5: Solve for x
    x = 8,599,556,101.96/121,905.61
  6. Step 6: Final answer
    x = 70,542.74

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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.