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Finding the Fourth Proportional to 354,003.10, 530,129.85 and 235,030.30

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Solution

The fourth proportional to 354,003.10, 530,129.85 and 235,030.30 is: 351,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,003.10 : 530,129.85 = 235,030.30 : x
  2. Step 2: Convert to fraction form
    354,003.10/530,129.85 = 235,030.30/x
  3. Step 3: Cross multiply
    354,003.10x = 530,129.85 × 235,030.30
  4. Step 4: Simplify right side
    354,003.10x = 124,596,577,684.46
  5. Step 5: Solve for x
    x = 124,596,577,684.46/354,003.10
  6. Step 6: Final answer
    x = 351,964.65

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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.