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Finding the Fourth Proportional to 306,451.73, 423,111.73 and 191,776.73

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Solution

The fourth proportional to 306,451.73, 423,111.73 and 191,776.73 is: 264,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,451.73 : 423,111.73 = 191,776.73 : x
  2. Step 2: Convert to fraction form
    306,451.73/423,111.73 = 191,776.73/x
  3. Step 3: Cross multiply
    306,451.73x = 423,111.73 × 191,776.73
  4. Step 4: Simplify right side
    306,451.73x = 81,142,984,582.38
  5. Step 5: Solve for x
    x = 81,142,984,582.38/306,451.73
  6. Step 6: Final answer
    x = 264,782.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.