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Finding the Fourth Proportional to 58,700.89, 81,005.02 and 31,842.51

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Solution

The fourth proportional to 58,700.89, 81,005.02 and 31,842.51 is: 43,941.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,700.89 : 81,005.02 = 31,842.51 : x
  2. Step 2: Convert to fraction form
    58,700.89/81,005.02 = 31,842.51/x
  3. Step 3: Cross multiply
    58,700.89x = 81,005.02 × 31,842.51
  4. Step 4: Simplify right side
    58,700.89x = 2,579,403,159.40
  5. Step 5: Solve for x
    x = 2,579,403,159.40/58,700.89
  6. Step 6: Final answer
    x = 43,941.47

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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.