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Finding the Fourth Proportional to 189,709.01, 261,795.25 and 103,666.10

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Solution

The fourth proportional to 189,709.01, 261,795.25 and 103,666.10 is: 143,057.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,709.01 : 261,795.25 = 103,666.10 : x
  2. Step 2: Convert to fraction form
    189,709.01/261,795.25 = 103,666.10/x
  3. Step 3: Cross multiply
    189,709.01x = 261,795.25 × 103,666.10
  4. Step 4: Simplify right side
    189,709.01x = 27,139,292,566.03
  5. Step 5: Solve for x
    x = 27,139,292,566.03/189,709.01
  6. Step 6: Final answer
    x = 143,057.48

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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.