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Finding the Fourth Proportional to 531,908.10, 734,516.10 and 395,892.36

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Solution

The fourth proportional to 531,908.10, 734,516.10 and 395,892.36 is: 546,690.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,908.10 : 734,516.10 = 395,892.36 : x
  2. Step 2: Convert to fraction form
    531,908.10/734,516.10 = 395,892.36/x
  3. Step 3: Cross multiply
    531,908.10x = 734,516.10 × 395,892.36
  4. Step 4: Simplify right side
    531,908.10x = 290,789,312,287.00
  5. Step 5: Solve for x
    x = 290,789,312,287.00/531,908.10
  6. Step 6: Final answer
    x = 546,690.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.