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Finding the Fourth Proportional to 705,976.32, 974,247.04 and 388,024.32

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Solution

The fourth proportional to 705,976.32, 974,247.04 and 388,024.32 is: 535,473.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,976.32 : 974,247.04 = 388,024.32 : x
  2. Step 2: Convert to fraction form
    705,976.32/974,247.04 = 388,024.32/x
  3. Step 3: Cross multiply
    705,976.32x = 974,247.04 × 388,024.32
  4. Step 4: Simplify right side
    705,976.32x = 378,031,545,208.01
  5. Step 5: Solve for x
    x = 378,031,545,208.01/705,976.32
  6. Step 6: Final answer
    x = 535,473.41

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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.