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Finding the Fourth Proportional to 666,376.68, 918,643.28 and 475,057.92

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Solution

The fourth proportional to 666,376.68, 918,643.28 and 475,057.92 is: 654,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,376.68 : 918,643.28 = 475,057.92 : x
  2. Step 2: Convert to fraction form
    666,376.68/918,643.28 = 475,057.92/x
  3. Step 3: Cross multiply
    666,376.68x = 918,643.28 × 475,057.92
  4. Step 4: Simplify right side
    666,376.68x = 436,408,763,443.49
  5. Step 5: Solve for x
    x = 436,408,763,443.49/666,376.68
  6. Step 6: Final answer
    x = 654,898.01

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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.