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Finding the Fourth Proportional to 590,912.60, 885,764.10 and 290,931.80

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Solution

The fourth proportional to 590,912.60, 885,764.10 and 290,931.80 is: 436,099.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,912.60 : 885,764.10 = 290,931.80 : x
  2. Step 2: Convert to fraction form
    590,912.60/885,764.10 = 290,931.80/x
  3. Step 3: Cross multiply
    590,912.60x = 885,764.10 × 290,931.80
  4. Step 4: Simplify right side
    590,912.60x = 257,696,943,988.38
  5. Step 5: Solve for x
    x = 257,696,943,988.38/590,912.60
  6. Step 6: Final answer
    x = 436,099.93

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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.