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Finding the Fourth Proportional to 928,683.78, 1,393,025.97 and 613,066.87

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Solution

The fourth proportional to 928,683.78, 1,393,025.97 and 613,066.87 is: 919,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,683.78 : 1,393,025.97 = 613,066.87 : x
  2. Step 2: Convert to fraction form
    928,683.78/1,393,025.97 = 613,066.87/x
  3. Step 3: Cross multiply
    928,683.78x = 1,393,025.97 × 613,066.87
  4. Step 4: Simplify right side
    928,683.78x = 854,018,071,256.61
  5. Step 5: Solve for x
    x = 854,018,071,256.61/928,683.78
  6. Step 6: Final answer
    x = 919,600.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.