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Finding the Fourth Proportional to 117,887.60, 162,830.96 and 85,570.58

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Solution

The fourth proportional to 117,887.60, 162,830.96 and 85,570.58 is: 118,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,887.60 : 162,830.96 = 85,570.58 : x
  2. Step 2: Convert to fraction form
    117,887.60/162,830.96 = 85,570.58/x
  3. Step 3: Cross multiply
    117,887.60x = 162,830.96 × 85,570.58
  4. Step 4: Simplify right side
    117,887.60x = 13,933,538,447.15
  5. Step 5: Solve for x
    x = 13,933,538,447.15/117,887.60
  6. Step 6: Final answer
    x = 118,193.42

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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.