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Finding the Fourth Proportional to 353,113.20, 528,892.20 and 306,457.20

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Solution

The fourth proportional to 353,113.20, 528,892.20 and 306,457.20 is: 459,010.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,113.20 : 528,892.20 = 306,457.20 : x
  2. Step 2: Convert to fraction form
    353,113.20/528,892.20 = 306,457.20/x
  3. Step 3: Cross multiply
    353,113.20x = 528,892.20 × 306,457.20
  4. Step 4: Simplify right side
    353,113.20x = 162,082,822,713.84
  5. Step 5: Solve for x
    x = 162,082,822,713.84/353,113.20
  6. Step 6: Final answer
    x = 459,010.94

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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.