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Finding the Fourth Proportional to 216,908.88, 323,886.77 and 191,395.77

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Solution

The fourth proportional to 216,908.88, 323,886.77 and 191,395.77 is: 285,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,908.88 : 323,886.77 = 191,395.77 : x
  2. Step 2: Convert to fraction form
    216,908.88/323,886.77 = 191,395.77/x
  3. Step 3: Cross multiply
    216,908.88x = 323,886.77 × 191,395.77
  4. Step 4: Simplify right side
    216,908.88x = 61,990,556,779.98
  5. Step 5: Solve for x
    x = 61,990,556,779.98/216,908.88
  6. Step 6: Final answer
    x = 285,790.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.