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Finding the Fourth Proportional to 611,105.70, 843,368.48 and 404,014.28

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Solution

The fourth proportional to 611,105.70, 843,368.48 and 404,014.28 is: 557,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,105.70 : 843,368.48 = 404,014.28 : x
  2. Step 2: Convert to fraction form
    611,105.70/843,368.48 = 404,014.28/x
  3. Step 3: Cross multiply
    611,105.70x = 843,368.48 × 404,014.28
  4. Step 4: Simplify right side
    611,105.70x = 340,732,912,307.22
  5. Step 5: Solve for x
    x = 340,732,912,307.22/611,105.70
  6. Step 6: Final answer
    x = 557,567.89

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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.