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Finding the Fourth Proportional to 590,988.60, 885,906.90 and 338,009.40

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Solution

The fourth proportional to 590,988.60, 885,906.90 and 338,009.40 is: 506,684.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,988.60 : 885,906.90 = 338,009.40 : x
  2. Step 2: Convert to fraction form
    590,988.60/885,906.90 = 338,009.40/x
  3. Step 3: Cross multiply
    590,988.60x = 885,906.90 × 338,009.40
  4. Step 4: Simplify right side
    590,988.60x = 299,444,859,724.86
  5. Step 5: Solve for x
    x = 299,444,859,724.86/590,988.60
  6. Step 6: Final answer
    x = 506,684.66

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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.