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Finding the Fourth Proportional to 35,866.80, 53,728.92 and 28,038.96

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Solution

The fourth proportional to 35,866.80, 53,728.92 and 28,038.96 is: 42,002.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,866.80 : 53,728.92 = 28,038.96 : x
  2. Step 2: Convert to fraction form
    35,866.80/53,728.92 = 28,038.96/x
  3. Step 3: Cross multiply
    35,866.80x = 53,728.92 × 28,038.96
  4. Step 4: Simplify right side
    35,866.80x = 1,506,503,038.72
  5. Step 5: Solve for x
    x = 1,506,503,038.72/35,866.80
  6. Step 6: Final answer
    x = 42,002.72

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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.