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Finding the Fourth Proportional to 28,956.24, 39,956.24 and 16,210.12

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Solution

The fourth proportional to 28,956.24, 39,956.24 and 16,210.12 is: 22,368.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,956.24 : 39,956.24 = 16,210.12 : x
  2. Step 2: Convert to fraction form
    28,956.24/39,956.24 = 16,210.12/x
  3. Step 3: Cross multiply
    28,956.24x = 39,956.24 × 16,210.12
  4. Step 4: Simplify right side
    28,956.24x = 647,695,445.15
  5. Step 5: Solve for x
    x = 647,695,445.15/28,956.24
  6. Step 6: Final answer
    x = 22,368.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.