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Finding the Fourth Proportional to 525,906.40, 788,341.20 and 259,448.80

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Solution

The fourth proportional to 525,906.40, 788,341.20 and 259,448.80 is: 388,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,906.40 : 788,341.20 = 259,448.80 : x
  2. Step 2: Convert to fraction form
    525,906.40/788,341.20 = 259,448.80/x
  3. Step 3: Cross multiply
    525,906.40x = 788,341.20 × 259,448.80
  4. Step 4: Simplify right side
    525,906.40x = 204,534,178,330.56
  5. Step 5: Solve for x
    x = 204,534,178,330.56/525,906.40
  6. Step 6: Final answer
    x = 388,917.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.