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Finding the Fourth Proportional to 31,068.80, 46,612.72 and 18,602.88

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Solution

The fourth proportional to 31,068.80, 46,612.72 and 18,602.88 is: 27,910.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,068.80 : 46,612.72 = 18,602.88 : x
  2. Step 2: Convert to fraction form
    31,068.80/46,612.72 = 18,602.88/x
  3. Step 3: Cross multiply
    31,068.80x = 46,612.72 × 18,602.88
  4. Step 4: Simplify right side
    31,068.80x = 867,130,836.63
  5. Step 5: Solve for x
    x = 867,130,836.63/31,068.80
  6. Step 6: Final answer
    x = 27,910.02

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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.