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Finding the Fourth Proportional to 571,162.25, 788,203.85 and 316,513.44

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Solution

The fourth proportional to 571,162.25, 788,203.85 and 316,513.44 is: 436,788.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,162.25 : 788,203.85 = 316,513.44 : x
  2. Step 2: Convert to fraction form
    571,162.25/788,203.85 = 316,513.44/x
  3. Step 3: Cross multiply
    571,162.25x = 788,203.85 × 316,513.44
  4. Step 4: Simplify right side
    571,162.25x = 249,477,110,402.18
  5. Step 5: Solve for x
    x = 249,477,110,402.18/571,162.25
  6. Step 6: Final answer
    x = 436,788.51

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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.