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Finding the Fourth Proportional to 510,863.96, 704,992.14 and 296,128.64

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Solution

The fourth proportional to 510,863.96, 704,992.14 and 296,128.64 is: 408,657.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,863.96 : 704,992.14 = 296,128.64 : x
  2. Step 2: Convert to fraction form
    510,863.96/704,992.14 = 296,128.64/x
  3. Step 3: Cross multiply
    510,863.96x = 704,992.14 × 296,128.64
  4. Step 4: Simplify right side
    510,863.96x = 208,768,363,628.89
  5. Step 5: Solve for x
    x = 208,768,363,628.89/510,863.96
  6. Step 6: Final answer
    x = 408,657.45

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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.