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Finding the Fourth Proportional to 628,001.36, 866,202.60 and 413,072.72

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Solution

The fourth proportional to 628,001.36, 866,202.60 and 413,072.72 is: 569,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,001.36 : 866,202.60 = 413,072.72 : x
  2. Step 2: Convert to fraction form
    628,001.36/866,202.60 = 413,072.72/x
  3. Step 3: Cross multiply
    628,001.36x = 866,202.60 × 413,072.72
  4. Step 4: Simplify right side
    628,001.36x = 357,804,664,053.07
  5. Step 5: Solve for x
    x = 357,804,664,053.07/628,001.36
  6. Step 6: Final answer
    x = 569,751.42

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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.