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Finding the Fourth Proportional to 113,783.64, 157,021.10 and 62,796

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Solution

The fourth proportional to 113,783.64, 157,021.10 and 62,796 is: 86,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,783.64 : 157,021.10 = 62,796 : x
  2. Step 2: Convert to fraction form
    113,783.64/157,021.10 = 62,796/x
  3. Step 3: Cross multiply
    113,783.64x = 157,021.10 × 62,796
  4. Step 4: Simplify right side
    113,783.64x = 9,860,296,995.60
  5. Step 5: Solve for x
    x = 9,860,296,995.60/113,783.64
  6. Step 6: Final answer
    x = 86,658.30

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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.