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Finding the Fourth Proportional to 74,670.66, 111,742.74 and 46,603.86

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Solution

The fourth proportional to 74,670.66, 111,742.74 and 46,603.86 is: 69,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,670.66 : 111,742.74 = 46,603.86 : x
  2. Step 2: Convert to fraction form
    74,670.66/111,742.74 = 46,603.86/x
  3. Step 3: Cross multiply
    74,670.66x = 111,742.74 × 46,603.86
  4. Step 4: Simplify right side
    74,670.66x = 5,207,643,010.98
  5. Step 5: Solve for x
    x = 5,207,643,010.98/74,670.66
  6. Step 6: Final answer
    x = 69,741.49

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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.