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Finding the Fourth Proportional to 316,927.44, 475,290.78 and 103,646.07

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Solution

The fourth proportional to 316,927.44, 475,290.78 and 103,646.07 is: 155,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,927.44 : 475,290.78 = 103,646.07 : x
  2. Step 2: Convert to fraction form
    316,927.44/475,290.78 = 103,646.07/x
  3. Step 3: Cross multiply
    316,927.44x = 475,290.78 × 103,646.07
  4. Step 4: Simplify right side
    316,927.44x = 49,262,021,454.23
  5. Step 5: Solve for x
    x = 49,262,021,454.23/316,927.44
  6. Step 6: Final answer
    x = 155,436.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.