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Finding the Fourth Proportional to 567,451.99, 783,089.13 and 312,812.29

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Solution

The fourth proportional to 567,451.99, 783,089.13 and 312,812.29 is: 431,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,451.99 : 783,089.13 = 312,812.29 : x
  2. Step 2: Convert to fraction form
    567,451.99/783,089.13 = 312,812.29/x
  3. Step 3: Cross multiply
    567,451.99x = 783,089.13 × 312,812.29
  4. Step 4: Simplify right side
    567,451.99x = 244,959,904,029.41
  5. Step 5: Solve for x
    x = 244,959,904,029.41/567,451.99
  6. Step 6: Final answer
    x = 431,683.93

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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.