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Finding the Fourth Proportional to 79,886.07, 110,205.62 and 47,602.57

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Solution

The fourth proportional to 79,886.07, 110,205.62 and 47,602.57 is: 65,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,886.07 : 110,205.62 = 47,602.57 : x
  2. Step 2: Convert to fraction form
    79,886.07/110,205.62 = 47,602.57/x
  3. Step 3: Cross multiply
    79,886.07x = 110,205.62 × 47,602.57
  4. Step 4: Simplify right side
    79,886.07x = 5,246,069,951.40
  5. Step 5: Solve for x
    x = 5,246,069,951.40/79,886.07
  6. Step 6: Final answer
    x = 65,669.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.