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Finding the Fourth Proportional to 709,053.71, 978,855.45 and 547,546.19

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Solution

The fourth proportional to 709,053.71, 978,855.45 and 547,546.19 is: 755,892.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,053.71 : 978,855.45 = 547,546.19 : x
  2. Step 2: Convert to fraction form
    709,053.71/978,855.45 = 547,546.19/x
  3. Step 3: Cross multiply
    709,053.71x = 978,855.45 × 547,546.19
  4. Step 4: Simplify right side
    709,053.71x = 535,968,572,208.24
  5. Step 5: Solve for x
    x = 535,968,572,208.24/709,053.71
  6. Step 6: Final answer
    x = 755,892.77

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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.