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Finding the Fourth Proportional to 261,555.68, 392,164.68 and 111,893.60

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Solution

The fourth proportional to 261,555.68, 392,164.68 and 111,893.60 is: 167,768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,555.68 : 392,164.68 = 111,893.60 : x
  2. Step 2: Convert to fraction form
    261,555.68/392,164.68 = 111,893.60/x
  3. Step 3: Cross multiply
    261,555.68x = 392,164.68 × 111,893.60
  4. Step 4: Simplify right side
    261,555.68x = 43,880,717,838.05
  5. Step 5: Solve for x
    x = 43,880,717,838.05/261,555.68
  6. Step 6: Final answer
    x = 167,768.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.