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Finding the Fourth Proportional to 694,087.47, 957,889.55 and 388,192.32

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Solution

The fourth proportional to 694,087.47, 957,889.55 and 388,192.32 is: 535,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,087.47 : 957,889.55 = 388,192.32 : x
  2. Step 2: Convert to fraction form
    694,087.47/957,889.55 = 388,192.32/x
  3. Step 3: Cross multiply
    694,087.47x = 957,889.55 × 388,192.32
  4. Step 4: Simplify right side
    694,087.47x = 371,845,367,688.74
  5. Step 5: Solve for x
    x = 371,845,367,688.74/694,087.47
  6. Step 6: Final answer
    x = 535,732.72

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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.