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Finding the Fourth Proportional to 85,858.95, 118,492.46 and 47,630.84

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Solution

The fourth proportional to 85,858.95, 118,492.46 and 47,630.84 is: 65,734.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,858.95 : 118,492.46 = 47,630.84 : x
  2. Step 2: Convert to fraction form
    85,858.95/118,492.46 = 47,630.84/x
  3. Step 3: Cross multiply
    85,858.95x = 118,492.46 × 47,630.84
  4. Step 4: Simplify right side
    85,858.95x = 5,643,894,572.85
  5. Step 5: Solve for x
    x = 5,643,894,572.85/85,858.95
  6. Step 6: Final answer
    x = 65,734.49

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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.