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Finding the Fourth Proportional to 260,686.56, 391,047.59 and 83,206.93

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Solution

The fourth proportional to 260,686.56, 391,047.59 and 83,206.93 is: 124,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,686.56 : 391,047.59 = 83,206.93 : x
  2. Step 2: Convert to fraction form
    260,686.56/391,047.59 = 83,206.93/x
  3. Step 3: Cross multiply
    260,686.56x = 391,047.59 × 83,206.93
  4. Step 4: Simplify right side
    260,686.56x = 32,537,869,447.80
  5. Step 5: Solve for x
    x = 32,537,869,447.80/260,686.56
  6. Step 6: Final answer
    x = 124,816.06

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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.