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Finding the Fourth Proportional to 66,534.48, 91,823.88 and 38,256.72

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Solution

The fourth proportional to 66,534.48, 91,823.88 and 38,256.72 is: 52,797.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,534.48 : 91,823.88 = 38,256.72 : x
  2. Step 2: Convert to fraction form
    66,534.48/91,823.88 = 38,256.72/x
  3. Step 3: Cross multiply
    66,534.48x = 91,823.88 × 38,256.72
  4. Step 4: Simplify right side
    66,534.48x = 3,512,880,466.47
  5. Step 5: Solve for x
    x = 3,512,880,466.47/66,534.48
  6. Step 6: Final answer
    x = 52,797.89

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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.