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Finding the Fourth Proportional to 66,404.64, 91,637.20 and 36,190.16

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Solution

The fourth proportional to 66,404.64, 91,637.20 and 36,190.16 is: 49,941.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,404.64 : 91,637.20 = 36,190.16 : x
  2. Step 2: Convert to fraction form
    66,404.64/91,637.20 = 36,190.16/x
  3. Step 3: Cross multiply
    66,404.64x = 91,637.20 × 36,190.16
  4. Step 4: Simplify right side
    66,404.64x = 3,316,364,929.95
  5. Step 5: Solve for x
    x = 3,316,364,929.95/66,404.64
  6. Step 6: Final answer
    x = 49,941.77

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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.