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Finding the Fourth Proportional to 261,170.55, 391,744.87 and 83,673.63

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Solution

The fourth proportional to 261,170.55, 391,744.87 and 83,673.63 is: 125,506.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,170.55 : 391,744.87 = 83,673.63 : x
  2. Step 2: Convert to fraction form
    261,170.55/391,744.87 = 83,673.63/x
  3. Step 3: Cross multiply
    261,170.55x = 391,744.87 × 83,673.63
  4. Step 4: Simplify right side
    261,170.55x = 32,778,712,929.69
  5. Step 5: Solve for x
    x = 32,778,712,929.69/261,170.55
  6. Step 6: Final answer
    x = 125,506.93

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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.