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Finding the Fourth Proportional to 228,376.69, 315,160.45 and 126,409.17

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Solution

The fourth proportional to 228,376.69, 315,160.45 and 126,409.17 is: 174,445.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,376.69 : 315,160.45 = 126,409.17 : x
  2. Step 2: Convert to fraction form
    228,376.69/315,160.45 = 126,409.17/x
  3. Step 3: Cross multiply
    228,376.69x = 315,160.45 × 126,409.17
  4. Step 4: Simplify right side
    228,376.69x = 39,839,171,767.16
  5. Step 5: Solve for x
    x = 39,839,171,767.16/228,376.69
  6. Step 6: Final answer
    x = 174,445.00

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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.