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Finding the Fourth Proportional to 191,622.65, 287,556.95 and 128,514.01

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Solution

The fourth proportional to 191,622.65, 287,556.95 and 128,514.01 is: 192,853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,622.65 : 287,556.95 = 128,514.01 : x
  2. Step 2: Convert to fraction form
    191,622.65/287,556.95 = 128,514.01/x
  3. Step 3: Cross multiply
    191,622.65x = 287,556.95 × 128,514.01
  4. Step 4: Simplify right side
    191,622.65x = 36,955,096,747.87
  5. Step 5: Solve for x
    x = 36,955,096,747.87/191,622.65
  6. Step 6: Final answer
    x = 192,853.49

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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.