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Finding the Fourth Proportional to 261,780.46, 392,573.70 and 93,256

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Solution

The fourth proportional to 261,780.46, 392,573.70 and 93,256 is: 139,849.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,780.46 : 392,573.70 = 93,256 : x
  2. Step 2: Convert to fraction form
    261,780.46/392,573.70 = 93,256/x
  3. Step 3: Cross multiply
    261,780.46x = 392,573.70 × 93,256
  4. Step 4: Simplify right side
    261,780.46x = 36,609,852,967.20
  5. Step 5: Solve for x
    x = 36,609,852,967.20/261,780.46
  6. Step 6: Final answer
    x = 139,849.45

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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.