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Finding the Fourth Proportional to 521,755.24, 786,186.80 and 429,061.68

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Solution

The fourth proportional to 521,755.24, 786,186.80 and 429,061.68 is: 646,515.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,755.24 : 786,186.80 = 429,061.68 : x
  2. Step 2: Convert to fraction form
    521,755.24/786,186.80 = 429,061.68/x
  3. Step 3: Cross multiply
    521,755.24x = 786,186.80 × 429,061.68
  4. Step 4: Simplify right side
    521,755.24x = 337,322,629,201.82
  5. Step 5: Solve for x
    x = 337,322,629,201.82/521,755.24
  6. Step 6: Final answer
    x = 646,515.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.