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Finding the Fourth Proportional to 66,366.56, 91,582.88 and 38,773.77

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Solution

The fourth proportional to 66,366.56, 91,582.88 and 38,773.77 is: 53,506.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.56 : 91,582.88 = 38,773.77 : x
  2. Step 2: Convert to fraction form
    66,366.56/91,582.88 = 38,773.77/x
  3. Step 3: Cross multiply
    66,366.56x = 91,582.88 × 38,773.77
  4. Step 4: Simplify right side
    66,366.56x = 3,551,013,621.99
  5. Step 5: Solve for x
    x = 3,551,013,621.99/66,366.56
  6. Step 6: Final answer
    x = 53,506.07

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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.