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Finding the Fourth Proportional to 710,934.88, 981,090.96 and 409,129.12

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Solution

The fourth proportional to 710,934.88, 981,090.96 and 409,129.12 is: 564,598.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,934.88 : 981,090.96 = 409,129.12 : x
  2. Step 2: Convert to fraction form
    710,934.88/981,090.96 = 409,129.12/x
  3. Step 3: Cross multiply
    710,934.88x = 981,090.96 × 409,129.12
  4. Step 4: Simplify right side
    710,934.88x = 401,392,881,104.76
  5. Step 5: Solve for x
    x = 401,392,881,104.76/710,934.88
  6. Step 6: Final answer
    x = 564,598.66

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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.