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Finding the Fourth Proportional to 571,224, 788,289.12 and 316,591.59

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Solution

The fourth proportional to 571,224, 788,289.12 and 316,591.59 is: 436,896.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,224 : 788,289.12 = 316,591.59 : x
  2. Step 2: Convert to fraction form
    571,224/788,289.12 = 316,591.59/x
  3. Step 3: Cross multiply
    571,224x = 788,289.12 × 316,591.59
  4. Step 4: Simplify right side
    571,224x = 249,565,705,880.50
  5. Step 5: Solve for x
    x = 249,565,705,880.50/571,224
  6. Step 6: Final answer
    x = 436,896.39

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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.