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Finding the Fourth Proportional to 66,465.42, 91,652.63 and 43,775.43

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Solution

The fourth proportional to 66,465.42, 91,652.63 and 43,775.43 is: 60,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,465.42 : 91,652.63 = 43,775.43 : x
  2. Step 2: Convert to fraction form
    66,465.42/91,652.63 = 43,775.43/x
  3. Step 3: Cross multiply
    66,465.42x = 91,652.63 × 43,775.43
  4. Step 4: Simplify right side
    66,465.42x = 4,012,133,070.00
  5. Step 5: Solve for x
    x = 4,012,133,070.00/66,465.42
  6. Step 6: Final answer
    x = 60,364.22

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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.