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Finding the Fourth Proportional to 511,443.05, 767,136.76 and 156,457.07

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Solution

The fourth proportional to 511,443.05, 767,136.76 and 156,457.07 is: 234,677.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,443.05 : 767,136.76 = 156,457.07 : x
  2. Step 2: Convert to fraction form
    511,443.05/767,136.76 = 156,457.07/x
  3. Step 3: Cross multiply
    511,443.05x = 767,136.76 × 156,457.07
  4. Step 4: Simplify right side
    511,443.05x = 120,023,965,140.92
  5. Step 5: Solve for x
    x = 120,023,965,140.92/511,443.05
  6. Step 6: Final answer
    x = 234,677.09

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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.