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Finding the Fourth Proportional to 341,386.78, 471,113.40 and 190,483.78

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Solution

The fourth proportional to 341,386.78, 471,113.40 and 190,483.78 is: 262,867.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,386.78 : 471,113.40 = 190,483.78 : x
  2. Step 2: Convert to fraction form
    341,386.78/471,113.40 = 190,483.78/x
  3. Step 3: Cross multiply
    341,386.78x = 471,113.40 × 190,483.78
  4. Step 4: Simplify right side
    341,386.78x = 89,739,461,240.65
  5. Step 5: Solve for x
    x = 89,739,461,240.65/341,386.78
  6. Step 6: Final answer
    x = 262,867.42

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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.