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Finding the Fourth Proportional to 355,228.80, 532,389.60 and 144,628.80

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Solution

The fourth proportional to 355,228.80, 532,389.60 and 144,628.80 is: 216,758.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,228.80 : 532,389.60 = 144,628.80 : x
  2. Step 2: Convert to fraction form
    355,228.80/532,389.60 = 144,628.80/x
  3. Step 3: Cross multiply
    355,228.80x = 532,389.60 × 144,628.80
  4. Step 4: Simplify right side
    355,228.80x = 76,998,868,980.48
  5. Step 5: Solve for x
    x = 76,998,868,980.48/355,228.80
  6. Step 6: Final answer
    x = 216,758.52

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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.