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Finding the Fourth Proportional to 556,021.67, 767,391.87 and 352,091.21

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Solution

The fourth proportional to 556,021.67, 767,391.87 and 352,091.21 is: 485,937.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,021.67 : 767,391.87 = 352,091.21 : x
  2. Step 2: Convert to fraction form
    556,021.67/767,391.87 = 352,091.21/x
  3. Step 3: Cross multiply
    556,021.67x = 767,391.87 × 352,091.21
  4. Step 4: Simplify right side
    556,021.67x = 270,191,929,535.85
  5. Step 5: Solve for x
    x = 270,191,929,535.85/556,021.67
  6. Step 6: Final answer
    x = 485,937.77

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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.