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Finding the Fourth Proportional to 570,838.44, 787,810.36 and 316,189.82

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Solution

The fourth proportional to 570,838.44, 787,810.36 and 316,189.82 is: 436,371.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,838.44 : 787,810.36 = 316,189.82 : x
  2. Step 2: Convert to fraction form
    570,838.44/787,810.36 = 316,189.82/x
  3. Step 3: Cross multiply
    570,838.44x = 787,810.36 × 316,189.82
  4. Step 4: Simplify right side
    570,838.44x = 249,097,615,922.54
  5. Step 5: Solve for x
    x = 249,097,615,922.54/570,838.44
  6. Step 6: Final answer
    x = 436,371.48

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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.