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Finding the Fourth Proportional to 66,904.91, 92,328.54 and 36,689.48

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Solution

The fourth proportional to 66,904.91, 92,328.54 and 36,689.48 is: 50,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,904.91 : 92,328.54 = 36,689.48 : x
  2. Step 2: Convert to fraction form
    66,904.91/92,328.54 = 36,689.48/x
  3. Step 3: Cross multiply
    66,904.91x = 92,328.54 × 36,689.48
  4. Step 4: Simplify right side
    66,904.91x = 3,387,486,214.99
  5. Step 5: Solve for x
    x = 3,387,486,214.99/66,904.91
  6. Step 6: Final answer
    x = 50,631.35

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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.