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Finding the Fourth Proportional to 572,529.72, 790,075.98 and 317,874.36

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Solution

The fourth proportional to 572,529.72, 790,075.98 and 317,874.36 is: 438,658.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,529.72 : 790,075.98 = 317,874.36 : x
  2. Step 2: Convert to fraction form
    572,529.72/790,075.98 = 317,874.36/x
  3. Step 3: Cross multiply
    572,529.72x = 790,075.98 × 317,874.36
  4. Step 4: Simplify right side
    572,529.72x = 251,144,896,493.87
  5. Step 5: Solve for x
    x = 251,144,896,493.87/572,529.72
  6. Step 6: Final answer
    x = 438,658.27

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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.