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Finding the Fourth Proportional to 28,166.70, 38,873.52 and 16,070.16

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Solution

The fourth proportional to 28,166.70, 38,873.52 and 16,070.16 is: 22,178.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.70 : 38,873.52 = 16,070.16 : x
  2. Step 2: Convert to fraction form
    28,166.70/38,873.52 = 16,070.16/x
  3. Step 3: Cross multiply
    28,166.70x = 38,873.52 × 16,070.16
  4. Step 4: Simplify right side
    28,166.70x = 624,703,686.16
  5. Step 5: Solve for x
    x = 624,703,686.16/28,166.70
  6. Step 6: Final answer
    x = 22,178.80

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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.