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Finding the Fourth Proportional to 58,668.21, 80,961.73 and 31,810.63

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Solution

The fourth proportional to 58,668.21, 80,961.73 and 31,810.63 is: 43,898.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,668.21 : 80,961.73 = 31,810.63 : x
  2. Step 2: Convert to fraction form
    58,668.21/80,961.73 = 31,810.63/x
  3. Step 3: Cross multiply
    58,668.21x = 80,961.73 × 31,810.63
  4. Step 4: Simplify right side
    58,668.21x = 2,575,443,637.19
  5. Step 5: Solve for x
    x = 2,575,443,637.19/58,668.21
  6. Step 6: Final answer
    x = 43,898.45

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1.5x scale

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.