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Finding the Fourth Proportional to 567,512.66, 783,172.71 and 312,872.96

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Solution

The fourth proportional to 567,512.66, 783,172.71 and 312,872.96 is: 431,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,512.66 : 783,172.71 = 312,872.96 : x
  2. Step 2: Convert to fraction form
    567,512.66/783,172.71 = 312,872.96/x
  3. Step 3: Cross multiply
    567,512.66x = 783,172.71 × 312,872.96
  4. Step 4: Simplify right side
    567,512.66x = 245,033,563,968.92
  5. Step 5: Solve for x
    x = 245,033,563,968.92/567,512.66
  6. Step 6: Final answer
    x = 431,767.57

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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.