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Finding the Fourth Proportional to 19,085.58, 28,475.24 and 16,980.58

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Solution

The fourth proportional to 19,085.58, 28,475.24 and 16,980.58 is: 25,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,085.58 : 28,475.24 = 16,980.58 : x
  2. Step 2: Convert to fraction form
    19,085.58/28,475.24 = 16,980.58/x
  3. Step 3: Cross multiply
    19,085.58x = 28,475.24 × 16,980.58
  4. Step 4: Simplify right side
    19,085.58x = 483,526,090.84
  5. Step 5: Solve for x
    x = 483,526,090.84/19,085.58
  6. Step 6: Final answer
    x = 25,334.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.