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Finding the Fourth Proportional to 492,707.22, 679,937.85 and 274,925.07

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Solution

The fourth proportional to 492,707.22, 679,937.85 and 274,925.07 is: 379,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,707.22 : 679,937.85 = 274,925.07 : x
  2. Step 2: Convert to fraction form
    492,707.22/679,937.85 = 274,925.07/x
  3. Step 3: Cross multiply
    492,707.22x = 679,937.85 × 274,925.07
  4. Step 4: Simplify right side
    492,707.22x = 186,931,959,632.27
  5. Step 5: Solve for x
    x = 186,931,959,632.27/492,707.22
  6. Step 6: Final answer
    x = 379,397.65

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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.