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Finding the Fourth Proportional to 570,891.34, 787,796.19 and 312,716.68

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Solution

The fourth proportional to 570,891.34, 787,796.19 and 312,716.68 is: 431,530.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,891.34 : 787,796.19 = 312,716.68 : x
  2. Step 2: Convert to fraction form
    570,891.34/787,796.19 = 312,716.68/x
  3. Step 3: Cross multiply
    570,891.34x = 787,796.19 × 312,716.68
  4. Step 4: Simplify right side
    570,891.34x = 246,357,009,053.45
  5. Step 5: Solve for x
    x = 246,357,009,053.45/570,891.34
  6. Step 6: Final answer
    x = 431,530.47

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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.