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Finding the Fourth Proportional to 261,779.46, 392,572.20 and 93,255

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Solution

The fourth proportional to 261,779.46, 392,572.20 and 93,255 is: 139,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,779.46 : 392,572.20 = 93,255 : x
  2. Step 2: Convert to fraction form
    261,779.46/392,572.20 = 93,255/x
  3. Step 3: Cross multiply
    261,779.46x = 392,572.20 × 93,255
  4. Step 4: Simplify right side
    261,779.46x = 36,609,320,511
  5. Step 5: Solve for x
    x = 36,609,320,511/261,779.46
  6. Step 6: Final answer
    x = 139,847.95

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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.