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Finding the Fourth Proportional to 567,494.87, 783,148.19 and 312,855.17

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Solution

The fourth proportional to 567,494.87, 783,148.19 and 312,855.17 is: 431,743.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,494.87 : 783,148.19 = 312,855.17 : x
  2. Step 2: Convert to fraction form
    567,494.87/783,148.19 = 312,855.17/x
  3. Step 3: Cross multiply
    567,494.87x = 783,148.19 × 312,855.17
  4. Step 4: Simplify right side
    567,494.87x = 245,011,954,637.63
  5. Step 5: Solve for x
    x = 245,011,954,637.63/567,494.87
  6. Step 6: Final answer
    x = 431,743.03

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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.