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Finding the Fourth Proportional to 666,516.81, 919,791.68 and 364,710.81

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Solution

The fourth proportional to 666,516.81, 919,791.68 and 364,710.81 is: 503,300.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,516.81 : 919,791.68 = 364,710.81 : x
  2. Step 2: Convert to fraction form
    666,516.81/919,791.68 = 364,710.81/x
  3. Step 3: Cross multiply
    666,516.81x = 919,791.68 × 364,710.81
  4. Step 4: Simplify right side
    666,516.81x = 335,457,966,820.51
  5. Step 5: Solve for x
    x = 335,457,966,820.51/666,516.81
  6. Step 6: Final answer
    x = 503,300.08

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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.