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Finding the Fourth Proportional to 14,166.63, 19,547.73 and 7,879.01

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Solution

The fourth proportional to 14,166.63, 19,547.73 and 7,879.01 is: 10,871.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,166.63 : 19,547.73 = 7,879.01 : x
  2. Step 2: Convert to fraction form
    14,166.63/19,547.73 = 7,879.01/x
  3. Step 3: Cross multiply
    14,166.63x = 19,547.73 × 7,879.01
  4. Step 4: Simplify right side
    14,166.63x = 154,016,662.41
  5. Step 5: Solve for x
    x = 154,016,662.41/14,166.63
  6. Step 6: Final answer
    x = 10,871.79

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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.