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Finding the Fourth Proportional to 113,798.12, 157,039.21 and 62,807.86

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Solution

The fourth proportional to 113,798.12, 157,039.21 and 62,807.86 is: 86,673.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,798.12 : 157,039.21 = 62,807.86 : x
  2. Step 2: Convert to fraction form
    113,798.12/157,039.21 = 62,807.86/x
  3. Step 3: Cross multiply
    113,798.12x = 157,039.21 × 62,807.86
  4. Step 4: Simplify right side
    113,798.12x = 9,863,295,754.36
  5. Step 5: Solve for x
    x = 9,863,295,754.36/113,798.12
  6. Step 6: Final answer
    x = 86,673.63

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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.