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Finding the Fourth Proportional to 572,013.50, 789,378.73 and 317,364.08

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Solution

The fourth proportional to 572,013.50, 789,378.73 and 317,364.08 is: 437,962.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,013.50 : 789,378.73 = 317,364.08 : x
  2. Step 2: Convert to fraction form
    572,013.50/789,378.73 = 317,364.08/x
  3. Step 3: Cross multiply
    572,013.50x = 789,378.73 × 317,364.08
  4. Step 4: Simplify right side
    572,013.50x = 250,520,450,857.75
  5. Step 5: Solve for x
    x = 250,520,450,857.75/572,013.50
  6. Step 6: Final answer
    x = 437,962.48

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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.