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Finding the Fourth Proportional to 84,900.78, 117,157.38 and 46,659.50

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Solution

The fourth proportional to 84,900.78, 117,157.38 and 46,659.50 is: 64,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,900.78 : 117,157.38 = 46,659.50 : x
  2. Step 2: Convert to fraction form
    84,900.78/117,157.38 = 46,659.50/x
  3. Step 3: Cross multiply
    84,900.78x = 117,157.38 × 46,659.50
  4. Step 4: Simplify right side
    84,900.78x = 5,466,504,772.11
  5. Step 5: Solve for x
    x = 5,466,504,772.11/84,900.78
  6. Step 6: Final answer
    x = 64,386.98

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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.