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Finding the Fourth Proportional to 189,487.27, 261,485.58 and 104,602.51

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Solution

The fourth proportional to 189,487.27, 261,485.58 and 104,602.51 is: 144,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,487.27 : 261,485.58 = 104,602.51 : x
  2. Step 2: Convert to fraction form
    189,487.27/261,485.58 = 104,602.51/x
  3. Step 3: Cross multiply
    189,487.27x = 261,485.58 × 104,602.51
  4. Step 4: Simplify right side
    189,487.27x = 27,352,047,996.81
  5. Step 5: Solve for x
    x = 27,352,047,996.81/189,487.27
  6. Step 6: Final answer
    x = 144,347.68

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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.