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Finding the Fourth Proportional to 525,873.20, 788,809.80 and 193,578.80

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Solution

The fourth proportional to 525,873.20, 788,809.80 and 193,578.80 is: 290,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,873.20 : 788,809.80 = 193,578.80 : x
  2. Step 2: Convert to fraction form
    525,873.20/788,809.80 = 193,578.80/x
  3. Step 3: Cross multiply
    525,873.20x = 788,809.80 × 193,578.80
  4. Step 4: Simplify right side
    525,873.20x = 152,696,854,512.24
  5. Step 5: Solve for x
    x = 152,696,854,512.24/525,873.20
  6. Step 6: Final answer
    x = 290,368.20

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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.