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Finding the Fourth Proportional to 978,073.70, 1,467,110.55 and 942,644.30

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Solution

The fourth proportional to 978,073.70, 1,467,110.55 and 942,644.30 is: 1,413,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,073.70 : 1,467,110.55 = 942,644.30 : x
  2. Step 2: Convert to fraction form
    978,073.70/1,467,110.55 = 942,644.30/x
  3. Step 3: Cross multiply
    978,073.70x = 1,467,110.55 × 942,644.30
  4. Step 4: Simplify right side
    978,073.70x = 1,382,963,397,427.37
  5. Step 5: Solve for x
    x = 1,382,963,397,427.37/978,073.70
  6. Step 6: Final answer
    x = 1,413,966.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.