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Finding the Fourth Proportional to 706,596.78, 975,357.19 and 420,116.18

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Solution

The fourth proportional to 706,596.78, 975,357.19 and 420,116.18 is: 579,911.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,596.78 : 975,357.19 = 420,116.18 : x
  2. Step 2: Convert to fraction form
    706,596.78/975,357.19 = 420,116.18/x
  3. Step 3: Cross multiply
    706,596.78x = 975,357.19 × 420,116.18
  4. Step 4: Simplify right side
    706,596.78x = 409,763,329,820.97
  5. Step 5: Solve for x
    x = 409,763,329,820.97/706,596.78
  6. Step 6: Final answer
    x = 579,911.12

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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.