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Finding the Fourth Proportional to 590,803.20, 885,038.40 and 353,440.80

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Solution

The fourth proportional to 590,803.20, 885,038.40 and 353,440.80 is: 529,463.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,803.20 : 885,038.40 = 353,440.80 : x
  2. Step 2: Convert to fraction form
    590,803.20/885,038.40 = 353,440.80/x
  3. Step 3: Cross multiply
    590,803.20x = 885,038.40 × 353,440.80
  4. Step 4: Simplify right side
    590,803.20x = 312,808,680,126.72
  5. Step 5: Solve for x
    x = 312,808,680,126.72/590,803.20
  6. Step 6: Final answer
    x = 529,463.42

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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.