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Finding the Fourth Proportional to 355,187.80, 532,328.10 and 144,587.80

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Solution

The fourth proportional to 355,187.80, 532,328.10 and 144,587.80 is: 216,697.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,187.80 : 532,328.10 = 144,587.80 : x
  2. Step 2: Convert to fraction form
    355,187.80/532,328.10 = 144,587.80/x
  3. Step 3: Cross multiply
    355,187.80x = 532,328.10 × 144,587.80
  4. Step 4: Simplify right side
    355,187.80x = 76,968,148,857.18
  5. Step 5: Solve for x
    x = 76,968,148,857.18/355,187.80
  6. Step 6: Final answer
    x = 216,697.05

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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.