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Finding the Fourth Proportional to 355,021.80, 532,835.10 and 144,810.60

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Solution

The fourth proportional to 355,021.80, 532,835.10 and 144,810.60 is: 217,339.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,021.80 : 532,835.10 = 144,810.60 : x
  2. Step 2: Convert to fraction form
    355,021.80/532,835.10 = 144,810.60/x
  3. Step 3: Cross multiply
    355,021.80x = 532,835.10 × 144,810.60
  4. Step 4: Simplify right side
    355,021.80x = 77,160,170,532.06
  5. Step 5: Solve for x
    x = 77,160,170,532.06/355,021.80
  6. Step 6: Final answer
    x = 217,339.25

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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.