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Finding the Fourth Proportional to 83,237.60, 114,855 and 47,429.12

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Solution

The fourth proportional to 83,237.60, 114,855 and 47,429.12 is: 65,444.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,237.60 : 114,855 = 47,429.12 : x
  2. Step 2: Convert to fraction form
    83,237.60/114,855 = 47,429.12/x
  3. Step 3: Cross multiply
    83,237.60x = 114,855 × 47,429.12
  4. Step 4: Simplify right side
    83,237.60x = 5,447,471,577.60
  5. Step 5: Solve for x
    x = 5,447,471,577.60/83,237.60
  6. Step 6: Final answer
    x = 65,444.84

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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.