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Finding the Fourth Proportional to 554,788.28, 765,627.46 and 313,056.76

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Solution

The fourth proportional to 554,788.28, 765,627.46 and 313,056.76 is: 432,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,788.28 : 765,627.46 = 313,056.76 : x
  2. Step 2: Convert to fraction form
    554,788.28/765,627.46 = 313,056.76/x
  3. Step 3: Cross multiply
    554,788.28x = 765,627.46 × 313,056.76
  4. Step 4: Simplify right side
    554,788.28x = 239,684,851,994.63
  5. Step 5: Solve for x
    x = 239,684,851,994.63/554,788.28
  6. Step 6: Final answer
    x = 432,029.41

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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.