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Finding the Fourth Proportional to 189,430.59, 261,448.11 and 112,954.62

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Solution

The fourth proportional to 189,430.59, 261,448.11 and 112,954.62 is: 155,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,430.59 : 261,448.11 = 112,954.62 : x
  2. Step 2: Convert to fraction form
    189,430.59/261,448.11 = 112,954.62/x
  3. Step 3: Cross multiply
    189,430.59x = 261,448.11 × 112,954.62
  4. Step 4: Simplify right side
    189,430.59x = 29,531,771,914.77
  5. Step 5: Solve for x
    x = 29,531,771,914.77/189,430.59
  6. Step 6: Final answer
    x = 155,897.59

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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.