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Finding the Fourth Proportional to 415,628.78, 573,556.21 and 234,339.10

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Solution

The fourth proportional to 415,628.78, 573,556.21 and 234,339.10 is: 323,381.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,628.78 : 573,556.21 = 234,339.10 : x
  2. Step 2: Convert to fraction form
    415,628.78/573,556.21 = 234,339.10/x
  3. Step 3: Cross multiply
    415,628.78x = 573,556.21 × 234,339.10
  4. Step 4: Simplify right side
    415,628.78x = 134,406,646,050.81
  5. Step 5: Solve for x
    x = 134,406,646,050.81/415,628.78
  6. Step 6: Final answer
    x = 323,381.47

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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.