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Finding the Fourth Proportional to 710,381.16, 980,371.26 and 404,484.28

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Solution

The fourth proportional to 710,381.16, 980,371.26 and 404,484.28 is: 558,214.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,381.16 : 980,371.26 = 404,484.28 : x
  2. Step 2: Convert to fraction form
    710,381.16/980,371.26 = 404,484.28/x
  3. Step 3: Cross multiply
    710,381.16x = 980,371.26 × 404,484.28
  4. Step 4: Simplify right side
    710,381.16x = 396,544,763,233.79
  5. Step 5: Solve for x
    x = 396,544,763,233.79/710,381.16
  6. Step 6: Final answer
    x = 558,214.08

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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.