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Finding the Fourth Proportional to 66,776.94, 92,125.17 and 39,904.11

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Solution

The fourth proportional to 66,776.94, 92,125.17 and 39,904.11 is: 55,051.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,776.94 : 92,125.17 = 39,904.11 : x
  2. Step 2: Convert to fraction form
    66,776.94/92,125.17 = 39,904.11/x
  3. Step 3: Cross multiply
    66,776.94x = 92,125.17 × 39,904.11
  4. Step 4: Simplify right side
    66,776.94x = 3,676,172,917.45
  5. Step 5: Solve for x
    x = 3,676,172,917.45/66,776.94
  6. Step 6: Final answer
    x = 55,051.53

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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.