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Finding the Fourth Proportional to 692,133.88, 955,147.38 and 386,223.16

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Solution

The fourth proportional to 692,133.88, 955,147.38 and 386,223.16 is: 532,989.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,133.88 : 955,147.38 = 386,223.16 : x
  2. Step 2: Convert to fraction form
    692,133.88/955,147.38 = 386,223.16/x
  3. Step 3: Cross multiply
    692,133.88x = 955,147.38 × 386,223.16
  4. Step 4: Simplify right side
    692,133.88x = 368,900,039,369.32
  5. Step 5: Solve for x
    x = 368,900,039,369.32/692,133.88
  6. Step 6: Final answer
    x = 532,989.43

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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.