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Finding the Fourth Proportional to 570,533.63, 787,361.01 and 315,884.81

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Solution

The fourth proportional to 570,533.63, 787,361.01 and 315,884.81 is: 435,934.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,533.63 : 787,361.01 = 315,884.81 : x
  2. Step 2: Convert to fraction form
    570,533.63/787,361.01 = 315,884.81/x
  3. Step 3: Cross multiply
    570,533.63x = 787,361.01 × 315,884.81
  4. Step 4: Simplify right side
    570,533.63x = 248,715,383,829.09
  5. Step 5: Solve for x
    x = 248,715,383,829.09/570,533.63
  6. Step 6: Final answer
    x = 435,934.66

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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.