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Finding the Fourth Proportional to 191,808.51, 287,700.69 and 58,678.20

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Solution

The fourth proportional to 191,808.51, 287,700.69 and 58,678.20 is: 88,013.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,808.51 : 287,700.69 = 58,678.20 : x
  2. Step 2: Convert to fraction form
    191,808.51/287,700.69 = 58,678.20/x
  3. Step 3: Cross multiply
    191,808.51x = 287,700.69 × 58,678.20
  4. Step 4: Simplify right side
    191,808.51x = 16,881,758,627.96
  5. Step 5: Solve for x
    x = 16,881,758,627.96/191,808.51
  6. Step 6: Final answer
    x = 88,013.61

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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.