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Finding the Fourth Proportional to 28,595.10, 42,896.79 and 8,875.25

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Solution

The fourth proportional to 28,595.10, 42,896.79 and 8,875.25 is: 13,314.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,595.10 : 42,896.79 = 8,875.25 : x
  2. Step 2: Convert to fraction form
    28,595.10/42,896.79 = 8,875.25/x
  3. Step 3: Cross multiply
    28,595.10x = 42,896.79 × 8,875.25
  4. Step 4: Simplify right side
    28,595.10x = 380,719,735.45
  5. Step 5: Solve for x
    x = 380,719,735.45/28,595.10
  6. Step 6: Final answer
    x = 13,314.16

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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.