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Finding the Fourth Proportional to 411,417.72, 616,904.68 and 186,655.52

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Solution

The fourth proportional to 411,417.72, 616,904.68 and 186,655.52 is: 279,882.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,417.72 : 616,904.68 = 186,655.52 : x
  2. Step 2: Convert to fraction form
    411,417.72/616,904.68 = 186,655.52/x
  3. Step 3: Cross multiply
    411,417.72x = 616,904.68 × 186,655.52
  4. Step 4: Simplify right side
    411,417.72x = 115,148,663,835.83
  5. Step 5: Solve for x
    x = 115,148,663,835.83/411,417.72
  6. Step 6: Final answer
    x = 279,882.61

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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.