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Finding the Fourth Proportional to 675,177.74, 931,859.85 and 388,863.59

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Solution

The fourth proportional to 675,177.74, 931,859.85 and 388,863.59 is: 536,697.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,177.74 : 931,859.85 = 388,863.59 : x
  2. Step 2: Convert to fraction form
    675,177.74/931,859.85 = 388,863.59/x
  3. Step 3: Cross multiply
    675,177.74x = 931,859.85 × 388,863.59
  4. Step 4: Simplify right side
    675,177.74x = 362,366,366,647.86
  5. Step 5: Solve for x
    x = 362,366,366,647.86/675,177.74
  6. Step 6: Final answer
    x = 536,697.74

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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.