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Finding the Fourth Proportional to 113,671.15, 170,312.63 and 63,720.07

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Solution

The fourth proportional to 113,671.15, 170,312.63 and 63,720.07 is: 95,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,671.15 : 170,312.63 = 63,720.07 : x
  2. Step 2: Convert to fraction form
    113,671.15/170,312.63 = 63,720.07/x
  3. Step 3: Cross multiply
    113,671.15x = 170,312.63 × 63,720.07
  4. Step 4: Simplify right side
    113,671.15x = 10,852,331,961.10
  5. Step 5: Solve for x
    x = 10,852,331,961.10/113,671.15
  6. Step 6: Final answer
    x = 95,471.30

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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.