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Finding the Fourth Proportional to 66,352.22, 91,476.51 and 64,288.34

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Solution

The fourth proportional to 66,352.22, 91,476.51 and 64,288.34 is: 88,631.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,352.22 : 91,476.51 = 64,288.34 : x
  2. Step 2: Convert to fraction form
    66,352.22/91,476.51 = 64,288.34/x
  3. Step 3: Cross multiply
    66,352.22x = 91,476.51 × 64,288.34
  4. Step 4: Simplify right side
    66,352.22x = 5,880,872,976.89
  5. Step 5: Solve for x
    x = 5,880,872,976.89/66,352.22
  6. Step 6: Final answer
    x = 88,631.14

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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.