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Finding the Fourth Proportional to 104,603.16, 156,888.24 and 86,947.32

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Solution

The fourth proportional to 104,603.16, 156,888.24 and 86,947.32 is: 130,407.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,603.16 : 156,888.24 = 86,947.32 : x
  2. Step 2: Convert to fraction form
    104,603.16/156,888.24 = 86,947.32/x
  3. Step 3: Cross multiply
    104,603.16x = 156,888.24 × 86,947.32
  4. Step 4: Simplify right side
    104,603.16x = 13,641,012,007.52
  5. Step 5: Solve for x
    x = 13,641,012,007.52/104,603.16
  6. Step 6: Final answer
    x = 130,407.27

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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.