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Finding the Fourth Proportional to 619,628.30, 854,770.80 and 404,894.06

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Solution

The fourth proportional to 619,628.30, 854,770.80 and 404,894.06 is: 558,547.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,628.30 : 854,770.80 = 404,894.06 : x
  2. Step 2: Convert to fraction form
    619,628.30/854,770.80 = 404,894.06/x
  3. Step 3: Cross multiply
    619,628.30x = 854,770.80 × 404,894.06
  4. Step 4: Simplify right side
    619,628.30x = 346,091,619,581.45
  5. Step 5: Solve for x
    x = 346,091,619,581.45/619,628.30
  6. Step 6: Final answer
    x = 558,547.15

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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.