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Finding the Fourth Proportional to 355,210.80, 532,816.20 and 214,897.20

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Solution

The fourth proportional to 355,210.80, 532,816.20 and 214,897.20 is: 322,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,210.80 : 532,816.20 = 214,897.20 : x
  2. Step 2: Convert to fraction form
    355,210.80/532,816.20 = 214,897.20/x
  3. Step 3: Cross multiply
    355,210.80x = 532,816.20 × 214,897.20
  4. Step 4: Simplify right side
    355,210.80x = 114,500,709,494.64
  5. Step 5: Solve for x
    x = 114,500,709,494.64/355,210.80
  6. Step 6: Final answer
    x = 322,345.80

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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.