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Finding the Fourth Proportional to 66,646.51, 99,969.74 and 26,683.47

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Solution

The fourth proportional to 66,646.51, 99,969.74 and 26,683.47 is: 40,025.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,646.51 : 99,969.74 = 26,683.47 : x
  2. Step 2: Convert to fraction form
    66,646.51/99,969.74 = 26,683.47/x
  3. Step 3: Cross multiply
    66,646.51x = 99,969.74 × 26,683.47
  4. Step 4: Simplify right side
    66,646.51x = 2,667,539,558.20
  5. Step 5: Solve for x
    x = 2,667,539,558.20/66,646.51
  6. Step 6: Final answer
    x = 40,025.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.