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Finding the Fourth Proportional to 99,290.26, 148,935.46 and 28,203.72

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Solution

The fourth proportional to 99,290.26, 148,935.46 and 28,203.72 is: 42,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,290.26 : 148,935.46 = 28,203.72 : x
  2. Step 2: Convert to fraction form
    99,290.26/148,935.46 = 28,203.72/x
  3. Step 3: Cross multiply
    99,290.26x = 148,935.46 × 28,203.72
  4. Step 4: Simplify right side
    99,290.26x = 4,200,533,854.66
  5. Step 5: Solve for x
    x = 4,200,533,854.66/99,290.26
  6. Step 6: Final answer
    x = 42,305.60

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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.