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Finding the Fourth Proportional to 13,074.98, 18,043.48 and 7,106.63

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Solution

The fourth proportional to 13,074.98, 18,043.48 and 7,106.63 is: 9,807.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.98 : 18,043.48 = 7,106.63 : x
  2. Step 2: Convert to fraction form
    13,074.98/18,043.48 = 7,106.63/x
  3. Step 3: Cross multiply
    13,074.98x = 18,043.48 × 7,106.63
  4. Step 4: Simplify right side
    13,074.98x = 128,228,300.74
  5. Step 5: Solve for x
    x = 128,228,300.74/13,074.98
  6. Step 6: Final answer
    x = 9,807.15

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Half scale
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Double scale
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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.