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Finding the Fourth Proportional to 572,237.82, 789,782.70 and 317,671.02

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Solution

The fourth proportional to 572,237.82, 789,782.70 and 317,671.02 is: 438,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,237.82 : 789,782.70 = 317,671.02 : x
  2. Step 2: Convert to fraction form
    572,237.82/789,782.70 = 317,671.02/x
  3. Step 3: Cross multiply
    572,237.82x = 789,782.70 × 317,671.02
  4. Step 4: Simplify right side
    572,237.82x = 250,891,075,887.35
  5. Step 5: Solve for x
    x = 250,891,075,887.35/572,237.82
  6. Step 6: Final answer
    x = 438,438.47

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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.