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Finding the Fourth Proportional to 187,547.72, 281,330.66 and 61,187.72

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Solution

The fourth proportional to 187,547.72, 281,330.66 and 61,187.72 is: 91,784.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,547.72 : 281,330.66 = 61,187.72 : x
  2. Step 2: Convert to fraction form
    187,547.72/281,330.66 = 61,187.72/x
  3. Step 3: Cross multiply
    187,547.72x = 281,330.66 × 61,187.72
  4. Step 4: Simplify right side
    187,547.72x = 17,213,981,651.50
  5. Step 5: Solve for x
    x = 17,213,981,651.50/187,547.72
  6. Step 6: Final answer
    x = 91,784.54

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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.