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Finding the Fourth Proportional to 712,798.56, 983,653.84 and 386,105.36

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Solution

The fourth proportional to 712,798.56, 983,653.84 and 386,105.36 is: 532,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,798.56 : 983,653.84 = 386,105.36 : x
  2. Step 2: Convert to fraction form
    712,798.56/983,653.84 = 386,105.36/x
  3. Step 3: Cross multiply
    712,798.56x = 983,653.84 × 386,105.36
  4. Step 4: Simplify right side
    712,798.56x = 379,794,020,008.58
  5. Step 5: Solve for x
    x = 379,794,020,008.58/712,798.56
  6. Step 6: Final answer
    x = 532,820.97

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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.