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Finding the Fourth Proportional to 710,933.88, 981,089.58 and 409,128.12

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Solution

The fourth proportional to 710,933.88, 981,089.58 and 409,128.12 is: 564,597.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,933.88 : 981,089.58 = 409,128.12 : x
  2. Step 2: Convert to fraction form
    710,933.88/981,089.58 = 409,128.12/x
  3. Step 3: Cross multiply
    710,933.88x = 981,089.58 × 409,128.12
  4. Step 4: Simplify right side
    710,933.88x = 401,391,335,416.99
  5. Step 5: Solve for x
    x = 401,391,335,416.99/710,933.88
  6. Step 6: Final answer
    x = 564,597.28

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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.