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Finding the Fourth Proportional to 28,572.64, 42,832.71 and 9,848.23

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Solution

The fourth proportional to 28,572.64, 42,832.71 and 9,848.23 is: 14,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.64 : 42,832.71 = 9,848.23 : x
  2. Step 2: Convert to fraction form
    28,572.64/42,832.71 = 9,848.23/x
  3. Step 3: Cross multiply
    28,572.64x = 42,832.71 × 9,848.23
  4. Step 4: Simplify right side
    28,572.64x = 421,826,379.60
  5. Step 5: Solve for x
    x = 421,826,379.60/28,572.64
  6. Step 6: Final answer
    x = 14,763.30

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1.5x scale

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.