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Finding the Fourth Proportional to 191,616.03, 287,458.67 and 79,235.21

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Solution

The fourth proportional to 191,616.03, 287,458.67 and 79,235.21 is: 118,867.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,616.03 : 287,458.67 = 79,235.21 : x
  2. Step 2: Convert to fraction form
    191,616.03/287,458.67 = 79,235.21/x
  3. Step 3: Cross multiply
    191,616.03x = 287,458.67 × 79,235.21
  4. Step 4: Simplify right side
    191,616.03x = 22,776,849,000.51
  5. Step 5: Solve for x
    x = 22,776,849,000.51/191,616.03
  6. Step 6: Final answer
    x = 118,867.14

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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.