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Finding the Fourth Proportional to 717,363.90, 989,950.12 and 395,104.01

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Solution

The fourth proportional to 717,363.90, 989,950.12 and 395,104.01 is: 545,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,363.90 : 989,950.12 = 395,104.01 : x
  2. Step 2: Convert to fraction form
    717,363.90/989,950.12 = 395,104.01/x
  3. Step 3: Cross multiply
    717,363.90x = 989,950.12 × 395,104.01
  4. Step 4: Simplify right side
    717,363.90x = 391,133,256,174.47
  5. Step 5: Solve for x
    x = 391,133,256,174.47/717,363.90
  6. Step 6: Final answer
    x = 545,236.88

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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.