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Finding the Fourth Proportional to 682,812.93, 942,141.17 and 392,368.40

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Solution

The fourth proportional to 682,812.93, 942,141.17 and 392,368.40 is: 541,387.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,812.93 : 942,141.17 = 392,368.40 : x
  2. Step 2: Convert to fraction form
    682,812.93/942,141.17 = 392,368.40/x
  3. Step 3: Cross multiply
    682,812.93x = 942,141.17 × 392,368.40
  4. Step 4: Simplify right side
    682,812.93x = 369,666,418,736.32
  5. Step 5: Solve for x
    x = 369,666,418,736.32/682,812.93
  6. Step 6: Final answer
    x = 541,387.55

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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.