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Finding the Fourth Proportional to 19,109.94, 28,669.88 and 7,263.92

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Solution

The fourth proportional to 19,109.94, 28,669.88 and 7,263.92 is: 10,897.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.94 : 28,669.88 = 7,263.92 : x
  2. Step 2: Convert to fraction form
    19,109.94/28,669.88 = 7,263.92/x
  3. Step 3: Cross multiply
    19,109.94x = 28,669.88 × 7,263.92
  4. Step 4: Simplify right side
    19,109.94x = 208,255,714.73
  5. Step 5: Solve for x
    x = 208,255,714.73/19,109.94
  6. Step 6: Final answer
    x = 10,897.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.