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Finding the Fourth Proportional to 661,998.93, 913,531.62 and 375,512.86

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Solution

The fourth proportional to 661,998.93, 913,531.62 and 375,512.86 is: 518,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,998.93 : 913,531.62 = 375,512.86 : x
  2. Step 2: Convert to fraction form
    661,998.93/913,531.62 = 375,512.86/x
  3. Step 3: Cross multiply
    661,998.93x = 913,531.62 × 375,512.86
  4. Step 4: Simplify right side
    661,998.93x = 343,042,871,764.46
  5. Step 5: Solve for x
    x = 343,042,871,764.46/661,998.93
  6. Step 6: Final answer
    x = 518,192.49

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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.