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Finding the Fourth Proportional to 189,792.30, 261,913.44 and 104,909.34

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Solution

The fourth proportional to 189,792.30, 261,913.44 and 104,909.34 is: 144,774.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,792.30 : 261,913.44 = 104,909.34 : x
  2. Step 2: Convert to fraction form
    189,792.30/261,913.44 = 104,909.34/x
  3. Step 3: Cross multiply
    189,792.30x = 261,913.44 × 104,909.34
  4. Step 4: Simplify right side
    189,792.30x = 27,477,166,127.53
  5. Step 5: Solve for x
    x = 27,477,166,127.53/189,792.30
  6. Step 6: Final answer
    x = 144,774.93

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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.