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Finding the Fourth Proportional to 358,652.32, 538,220.40 and 148,289.44

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Solution

The fourth proportional to 358,652.32, 538,220.40 and 148,289.44 is: 222,534.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,652.32 : 538,220.40 = 148,289.44 : x
  2. Step 2: Convert to fraction form
    358,652.32/538,220.40 = 148,289.44/x
  3. Step 3: Cross multiply
    358,652.32x = 538,220.40 × 148,289.44
  4. Step 4: Simplify right side
    358,652.32x = 79,812,401,712.58
  5. Step 5: Solve for x
    x = 79,812,401,712.58/358,652.32
  6. Step 6: Final answer
    x = 222,534.18

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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.