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Finding the Fourth Proportional to 174,515.07, 261,829.04 and 85,706.30

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Solution

The fourth proportional to 174,515.07, 261,829.04 and 85,706.30 is: 128,587.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,515.07 : 261,829.04 = 85,706.30 : x
  2. Step 2: Convert to fraction form
    174,515.07/261,829.04 = 85,706.30/x
  3. Step 3: Cross multiply
    174,515.07x = 261,829.04 × 85,706.30
  4. Step 4: Simplify right side
    174,515.07x = 22,440,398,250.95
  5. Step 5: Solve for x
    x = 22,440,398,250.95/174,515.07
  6. Step 6: Final answer
    x = 128,587.17

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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.