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Finding the Fourth Proportional to 657,828.69, 987,136.68 and 283,851.69

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Solution

The fourth proportional to 657,828.69, 987,136.68 and 283,851.69 is: 425,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,828.69 : 987,136.68 = 283,851.69 : x
  2. Step 2: Convert to fraction form
    657,828.69/987,136.68 = 283,851.69/x
  3. Step 3: Cross multiply
    657,828.69x = 987,136.68 × 283,851.69
  4. Step 4: Simplify right side
    657,828.69x = 280,200,414,878.99
  5. Step 5: Solve for x
    x = 280,200,414,878.99/657,828.69
  6. Step 6: Final answer
    x = 425,947.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.