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Finding the Fourth Proportional to 207,778.60, 286,742.82 and 117,137.92

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Solution

The fourth proportional to 207,778.60, 286,742.82 and 117,137.92 is: 161,655.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,778.60 : 286,742.82 = 117,137.92 : x
  2. Step 2: Convert to fraction form
    207,778.60/286,742.82 = 117,137.92/x
  3. Step 3: Cross multiply
    207,778.60x = 286,742.82 × 117,137.92
  4. Step 4: Simplify right side
    207,778.60x = 33,588,457,509.73
  5. Step 5: Solve for x
    x = 33,588,457,509.73/207,778.60
  6. Step 6: Final answer
    x = 161,655.04

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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.