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Finding the Fourth Proportional to 66,597.55, 91,903.09 and 36,383

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Solution

The fourth proportional to 66,597.55, 91,903.09 and 36,383 is: 50,207.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,597.55 : 91,903.09 = 36,383 : x
  2. Step 2: Convert to fraction form
    66,597.55/91,903.09 = 36,383/x
  3. Step 3: Cross multiply
    66,597.55x = 91,903.09 × 36,383
  4. Step 4: Simplify right side
    66,597.55x = 3,343,710,123.47
  5. Step 5: Solve for x
    x = 3,343,710,123.47/66,597.55
  6. Step 6: Final answer
    x = 50,207.70

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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.