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Finding the Fourth Proportional to 261,428.16, 392,141.76 and 182,696.16

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Solution

The fourth proportional to 261,428.16, 392,141.76 and 182,696.16 is: 274,043.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,428.16 : 392,141.76 = 182,696.16 : x
  2. Step 2: Convert to fraction form
    261,428.16/392,141.76 = 182,696.16/x
  3. Step 3: Cross multiply
    261,428.16x = 392,141.76 × 182,696.16
  4. Step 4: Simplify right side
    261,428.16x = 71,642,793,727.64
  5. Step 5: Solve for x
    x = 71,642,793,727.64/261,428.16
  6. Step 6: Final answer
    x = 274,043.90

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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.