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Finding the Fourth Proportional to 326,547.72, 489,354.24 and 186,015.96

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Solution

The fourth proportional to 326,547.72, 489,354.24 and 186,015.96 is: 278,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,547.72 : 489,354.24 = 186,015.96 : x
  2. Step 2: Convert to fraction form
    326,547.72/489,354.24 = 186,015.96/x
  3. Step 3: Cross multiply
    326,547.72x = 489,354.24 × 186,015.96
  4. Step 4: Simplify right side
    326,547.72x = 91,027,698,733.67
  5. Step 5: Solve for x
    x = 91,027,698,733.67/326,547.72
  6. Step 6: Final answer
    x = 278,757.72

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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.