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Finding the Fourth Proportional to 66,653.94, 91,992.44 and 38,354.16

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Solution

The fourth proportional to 66,653.94, 91,992.44 and 38,354.16 is: 52,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,653.94 : 91,992.44 = 38,354.16 : x
  2. Step 2: Convert to fraction form
    66,653.94/91,992.44 = 38,354.16/x
  3. Step 3: Cross multiply
    66,653.94x = 91,992.44 × 38,354.16
  4. Step 4: Simplify right side
    66,653.94x = 3,528,292,762.55
  5. Step 5: Solve for x
    x = 3,528,292,762.55/66,653.94
  6. Step 6: Final answer
    x = 52,934.50

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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.