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Finding the Fourth Proportional to 321,597.40, 482,465.40 and 108,386.68

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Solution

The fourth proportional to 321,597.40, 482,465.40 and 108,386.68 is: 162,603.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,597.40 : 482,465.40 = 108,386.68 : x
  2. Step 2: Convert to fraction form
    321,597.40/482,465.40 = 108,386.68/x
  3. Step 3: Cross multiply
    321,597.40x = 482,465.40 × 108,386.68
  4. Step 4: Simplify right side
    321,597.40x = 52,292,822,920.87
  5. Step 5: Solve for x
    x = 52,292,822,920.87/321,597.40
  6. Step 6: Final answer
    x = 162,603.38

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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.