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Finding the Fourth Proportional to 521,759.09, 786,192.62 and 429,065.53

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Solution

The fourth proportional to 521,759.09, 786,192.62 and 429,065.53 is: 646,520.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,759.09 : 786,192.62 = 429,065.53 : x
  2. Step 2: Convert to fraction form
    521,759.09/786,192.62 = 429,065.53/x
  3. Step 3: Cross multiply
    521,759.09x = 786,192.62 × 429,065.53
  4. Step 4: Simplify right side
    521,759.09x = 337,328,149,071.58
  5. Step 5: Solve for x
    x = 337,328,149,071.58/521,759.09
  6. Step 6: Final answer
    x = 646,520.88

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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.