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Finding the Fourth Proportional to 391,703.21, 537,030.10 and 384,617.33

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Solution

The fourth proportional to 391,703.21, 537,030.10 and 384,617.33 is: 527,315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,703.21 : 537,030.10 = 384,617.33 : x
  2. Step 2: Convert to fraction form
    391,703.21/537,030.10 = 384,617.33/x
  3. Step 3: Cross multiply
    391,703.21x = 537,030.10 × 384,617.33
  4. Step 4: Simplify right side
    391,703.21x = 206,551,083,191.63
  5. Step 5: Solve for x
    x = 206,551,083,191.63/391,703.21
  6. Step 6: Final answer
    x = 527,315.27

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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.