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Finding the Fourth Proportional to 66,084.16, 99,621.42 and 61,684.92

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Solution

The fourth proportional to 66,084.16, 99,621.42 and 61,684.92 is: 92,989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,084.16 : 99,621.42 = 61,684.92 : x
  2. Step 2: Convert to fraction form
    66,084.16/99,621.42 = 61,684.92/x
  3. Step 3: Cross multiply
    66,084.16x = 99,621.42 × 61,684.92
  4. Step 4: Simplify right side
    66,084.16x = 6,145,139,322.99
  5. Step 5: Solve for x
    x = 6,145,139,322.99/66,084.16
  6. Step 6: Final answer
    x = 92,989.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.