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Finding the Fourth Proportional to 714,941.91, 986,615.73 and 388,251.72

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Solution

The fourth proportional to 714,941.91, 986,615.73 and 388,251.72 is: 535,785.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,941.91 : 986,615.73 = 388,251.72 : x
  2. Step 2: Convert to fraction form
    714,941.91/986,615.73 = 388,251.72/x
  3. Step 3: Cross multiply
    714,941.91x = 986,615.73 × 388,251.72
  4. Step 4: Simplify right side
    714,941.91x = 383,055,254,151.56
  5. Step 5: Solve for x
    x = 383,055,254,151.56/714,941.91
  6. Step 6: Final answer
    x = 535,785.14

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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.