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Finding the Fourth Proportional to 261,455.35, 392,348.92 and 111,696.76

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Solution

The fourth proportional to 261,455.35, 392,348.92 and 111,696.76 is: 167,616.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,455.35 : 392,348.92 = 111,696.76 : x
  2. Step 2: Convert to fraction form
    261,455.35/392,348.92 = 111,696.76/x
  3. Step 3: Cross multiply
    261,455.35x = 392,348.92 × 111,696.76
  4. Step 4: Simplify right side
    261,455.35x = 43,824,103,153.50
  5. Step 5: Solve for x
    x = 43,824,103,153.50/261,455.35
  6. Step 6: Final answer
    x = 167,616.01

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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.