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Finding the Fourth Proportional to 365,129.67, 547,688.59 and 140,538.90

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Solution

The fourth proportional to 365,129.67, 547,688.59 and 140,538.90 is: 210,806.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,129.67 : 547,688.59 = 140,538.90 : x
  2. Step 2: Convert to fraction form
    365,129.67/547,688.59 = 140,538.90/x
  3. Step 3: Cross multiply
    365,129.67x = 547,688.59 × 140,538.90
  4. Step 4: Simplify right side
    365,129.67x = 76,971,550,602.89
  5. Step 5: Solve for x
    x = 76,971,550,602.89/365,129.67
  6. Step 6: Final answer
    x = 210,806.07

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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.