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Finding the Fourth Proportional to 66,857.68, 92,210.44 and 56,819.34

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Solution

The fourth proportional to 66,857.68, 92,210.44 and 56,819.34 is: 78,365.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,857.68 : 92,210.44 = 56,819.34 : x
  2. Step 2: Convert to fraction form
    66,857.68/92,210.44 = 56,819.34/x
  3. Step 3: Cross multiply
    66,857.68x = 92,210.44 × 56,819.34
  4. Step 4: Simplify right side
    66,857.68x = 5,239,336,341.91
  5. Step 5: Solve for x
    x = 5,239,336,341.91/66,857.68
  6. Step 6: Final answer
    x = 78,365.51

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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.