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Finding the Fourth Proportional to 152,138.15, 209,879.93 and 98,440.48

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Solution

The fourth proportional to 152,138.15, 209,879.93 and 98,440.48 is: 135,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,138.15 : 209,879.93 = 98,440.48 : x
  2. Step 2: Convert to fraction form
    152,138.15/209,879.93 = 98,440.48/x
  3. Step 3: Cross multiply
    152,138.15x = 209,879.93 × 98,440.48
  4. Step 4: Simplify right side
    152,138.15x = 20,660,679,509.96
  5. Step 5: Solve for x
    x = 20,660,679,509.96/152,138.15
  6. Step 6: Final answer
    x = 135,802.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.