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Finding the Fourth Proportional to 191,199.80, 286,799.70 and 96,721.40

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Solution

The fourth proportional to 191,199.80, 286,799.70 and 96,721.40 is: 145,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,199.80 : 286,799.70 = 96,721.40 : x
  2. Step 2: Convert to fraction form
    191,199.80/286,799.70 = 96,721.40/x
  3. Step 3: Cross multiply
    191,199.80x = 286,799.70 × 96,721.40
  4. Step 4: Simplify right side
    191,199.80x = 27,739,668,503.58
  5. Step 5: Solve for x
    x = 27,739,668,503.58/191,199.80
  6. Step 6: Final answer
    x = 145,082.10

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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.