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Finding the Fourth Proportional to 391,701.45, 537,027.71 and 384,615.57

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Solution

The fourth proportional to 391,701.45, 537,027.71 and 384,615.57 is: 527,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,701.45 : 537,027.71 = 384,615.57 : x
  2. Step 2: Convert to fraction form
    391,701.45/537,027.71 = 384,615.57/x
  3. Step 3: Cross multiply
    391,701.45x = 537,027.71 × 384,615.57
  4. Step 4: Simplify right side
    391,701.45x = 206,549,218,878.22
  5. Step 5: Solve for x
    x = 206,549,218,878.22/391,701.45
  6. Step 6: Final answer
    x = 527,312.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.