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Finding the Fourth Proportional to 572,412, 789,888.98 and 317,743.14

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Solution

The fourth proportional to 572,412, 789,888.98 and 317,743.14 is: 438,463.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,412 : 789,888.98 = 317,743.14 : x
  2. Step 2: Convert to fraction form
    572,412/789,888.98 = 317,743.14/x
  3. Step 3: Cross multiply
    572,412x = 789,888.98 × 317,743.14
  4. Step 4: Simplify right side
    572,412x = 250,981,804,756.60
  5. Step 5: Solve for x
    x = 250,981,804,756.60/572,412
  6. Step 6: Final answer
    x = 438,463.56

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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.