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Finding the Fourth Proportional to 66,196.71, 91,403.01 and 40,714.92

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Solution

The fourth proportional to 66,196.71, 91,403.01 and 40,714.92 is: 56,218.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,196.71 : 91,403.01 = 40,714.92 : x
  2. Step 2: Convert to fraction form
    66,196.71/91,403.01 = 40,714.92/x
  3. Step 3: Cross multiply
    66,196.71x = 91,403.01 × 40,714.92
  4. Step 4: Simplify right side
    66,196.71x = 3,721,466,239.91
  5. Step 5: Solve for x
    x = 3,721,466,239.91/66,196.71
  6. Step 6: Final answer
    x = 56,218.30

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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.