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Finding the Fourth Proportional to 415,778.99, 573,732.18 and 306,941.22

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Solution

The fourth proportional to 415,778.99, 573,732.18 and 306,941.22 is: 423,547.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,778.99 : 573,732.18 = 306,941.22 : x
  2. Step 2: Convert to fraction form
    415,778.99/573,732.18 = 306,941.22/x
  3. Step 3: Cross multiply
    415,778.99x = 573,732.18 × 306,941.22
  4. Step 4: Simplify right side
    415,778.99x = 176,102,055,282.46
  5. Step 5: Solve for x
    x = 176,102,055,282.46/415,778.99
  6. Step 6: Final answer
    x = 423,547.27

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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.