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Finding the Fourth Proportional to 72,904.80, 100,668.24 and 46,090.56

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Solution

The fourth proportional to 72,904.80, 100,668.24 and 46,090.56 is: 63,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,904.80 : 100,668.24 = 46,090.56 : x
  2. Step 2: Convert to fraction form
    72,904.80/100,668.24 = 46,090.56/x
  3. Step 3: Cross multiply
    72,904.80x = 100,668.24 × 46,090.56
  4. Step 4: Simplify right side
    72,904.80x = 4,639,855,555.81
  5. Step 5: Solve for x
    x = 4,639,855,555.81/72,904.80
  6. Step 6: Final answer
    x = 63,642.66

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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.