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Finding the Fourth Proportional to 668,840.85, 923,767.02 and 440,419.23

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Solution

The fourth proportional to 668,840.85, 923,767.02 and 440,419.23 is: 608,283.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,840.85 : 923,767.02 = 440,419.23 : x
  2. Step 2: Convert to fraction form
    668,840.85/923,767.02 = 440,419.23/x
  3. Step 3: Cross multiply
    668,840.85x = 923,767.02 × 440,419.23
  4. Step 4: Simplify right side
    668,840.85x = 406,844,759,647.80
  5. Step 5: Solve for x
    x = 406,844,759,647.80/668,840.85
  6. Step 6: Final answer
    x = 608,283.36

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1.5x scale

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.