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Finding the Fourth Proportional to 413,999.10, 620,998.65 and 354,950.10

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Solution

The fourth proportional to 413,999.10, 620,998.65 and 354,950.10 is: 532,425.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,999.10 : 620,998.65 = 354,950.10 : x
  2. Step 2: Convert to fraction form
    413,999.10/620,998.65 = 354,950.10/x
  3. Step 3: Cross multiply
    413,999.10x = 620,998.65 × 354,950.10
  4. Step 4: Simplify right side
    413,999.10x = 220,423,532,917.37
  5. Step 5: Solve for x
    x = 220,423,532,917.37/413,999.10
  6. Step 6: Final answer
    x = 532,425.15

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Similar ratio
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1.5x scale

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.