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Finding the Fourth Proportional to 626,065.12, 864,012.68 and 354,133.16

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Solution

The fourth proportional to 626,065.12, 864,012.68 and 354,133.16 is: 488,727.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,065.12 : 864,012.68 = 354,133.16 : x
  2. Step 2: Convert to fraction form
    626,065.12/864,012.68 = 354,133.16/x
  3. Step 3: Cross multiply
    626,065.12x = 864,012.68 × 354,133.16
  4. Step 4: Simplify right side
    626,065.12x = 305,975,540,648.47
  5. Step 5: Solve for x
    x = 305,975,540,648.47/626,065.12
  6. Step 6: Final answer
    x = 488,727.98

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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.