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Finding the Fourth Proportional to 532,286.40, 798,429.60 and 488,740.80

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Solution

The fourth proportional to 532,286.40, 798,429.60 and 488,740.80 is: 733,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,286.40 : 798,429.60 = 488,740.80 : x
  2. Step 2: Convert to fraction form
    532,286.40/798,429.60 = 488,740.80/x
  3. Step 3: Cross multiply
    532,286.40x = 798,429.60 × 488,740.80
  4. Step 4: Simplify right side
    532,286.40x = 390,225,121,447.68
  5. Step 5: Solve for x
    x = 390,225,121,447.68/532,286.40
  6. Step 6: Final answer
    x = 733,111.20

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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.