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Finding the Fourth Proportional to 78,000.96, 117,001.14 and 18,836.54

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Solution

The fourth proportional to 78,000.96, 117,001.14 and 18,836.54 is: 28,254.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,000.96 : 117,001.14 = 18,836.54 : x
  2. Step 2: Convert to fraction form
    78,000.96/117,001.14 = 18,836.54/x
  3. Step 3: Cross multiply
    78,000.96x = 117,001.14 × 18,836.54
  4. Step 4: Simplify right side
    78,000.96x = 2,203,896,653.66
  5. Step 5: Solve for x
    x = 2,203,896,653.66/78,000.96
  6. Step 6: Final answer
    x = 28,254.74

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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.