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Finding the Fourth Proportional to 316,772.10, 475,108.62 and 103,538.40

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Solution

The fourth proportional to 316,772.10, 475,108.62 and 103,538.40 is: 155,291.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,772.10 : 475,108.62 = 103,538.40 : x
  2. Step 2: Convert to fraction form
    316,772.10/475,108.62 = 103,538.40/x
  3. Step 3: Cross multiply
    316,772.10x = 475,108.62 × 103,538.40
  4. Step 4: Simplify right side
    316,772.10x = 49,191,986,341.01
  5. Step 5: Solve for x
    x = 49,191,986,341.01/316,772.10
  6. Step 6: Final answer
    x = 155,291.41

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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.