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Finding the Fourth Proportional to 56,978,546.77, 78,631,287.26 and 33,457,603.61

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Solution

The fourth proportional to 56,978,546.77, 78,631,287.26 and 33,457,603.61 is: 46,172,017.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,978,546.77 : 78,631,287.26 = 33,457,603.61 : x
  2. Step 2: Convert to fraction form
    56,978,546.77/78,631,287.26 = 33,457,603.61/x
  3. Step 3: Cross multiply
    56,978,546.77x = 78,631,287.26 × 33,457,603.61
  4. Step 4: Simplify right side
    56,978,546.77x = 2,630,814,440,603,026
  5. Step 5: Solve for x
    x = 2,630,814,440,603,026/56,978,546.77
  6. Step 6: Final answer
    x = 46,172,017.19

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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.