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Finding the Fourth Proportional to 353,520.34, 530,281.60 and 87,280.88

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Solution

The fourth proportional to 353,520.34, 530,281.60 and 87,280.88 is: 130,921.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,520.34 : 530,281.60 = 87,280.88 : x
  2. Step 2: Convert to fraction form
    353,520.34/530,281.60 = 87,280.88/x
  3. Step 3: Cross multiply
    353,520.34x = 530,281.60 × 87,280.88
  4. Step 4: Simplify right side
    353,520.34x = 46,283,444,695.81
  5. Step 5: Solve for x
    x = 46,283,444,695.81/353,520.34
  6. Step 6: Final answer
    x = 130,921.59

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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.