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Finding the Fourth Proportional to 655,238.18, 903,977.43 and 406,763.58

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Solution

The fourth proportional to 655,238.18, 903,977.43 and 406,763.58 is: 561,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,238.18 : 903,977.43 = 406,763.58 : x
  2. Step 2: Convert to fraction form
    655,238.18/903,977.43 = 406,763.58/x
  3. Step 3: Cross multiply
    655,238.18x = 903,977.43 × 406,763.58
  4. Step 4: Simplify right side
    655,238.18x = 367,705,095,666.00
  5. Step 5: Solve for x
    x = 367,705,095,666.00/655,238.18
  6. Step 6: Final answer
    x = 561,177.76

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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.