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Finding the Fourth Proportional to 153,925.97, 212,415.83 and 85,944.11

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Solution

The fourth proportional to 153,925.97, 212,415.83 and 85,944.11 is: 118,601.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,925.97 : 212,415.83 = 85,944.11 : x
  2. Step 2: Convert to fraction form
    153,925.97/212,415.83 = 85,944.11/x
  3. Step 3: Cross multiply
    153,925.97x = 212,415.83 × 85,944.11
  4. Step 4: Simplify right side
    153,925.97x = 18,255,888,289.75
  5. Step 5: Solve for x
    x = 18,255,888,289.75/153,925.97
  6. Step 6: Final answer
    x = 118,601.75

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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.