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Finding the Fourth Proportional to 755,893.40, 1,043,134.32 and 411,728.28

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Solution

The fourth proportional to 755,893.40, 1,043,134.32 and 411,728.28 is: 568,185.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,893.40 : 1,043,134.32 = 411,728.28 : x
  2. Step 2: Convert to fraction form
    755,893.40/1,043,134.32 = 411,728.28/x
  3. Step 3: Cross multiply
    755,893.40x = 1,043,134.32 × 411,728.28
  4. Step 4: Simplify right side
    755,893.40x = 429,487,899,382.57
  5. Step 5: Solve for x
    x = 429,487,899,382.57/755,893.40
  6. Step 6: Final answer
    x = 568,185.80

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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.