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Finding the Fourth Proportional to 86,807.16, 119,793.90 and 47,063.16

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Solution

The fourth proportional to 86,807.16, 119,793.90 and 47,063.16 is: 64,947.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,807.16 : 119,793.90 = 47,063.16 : x
  2. Step 2: Convert to fraction form
    86,807.16/119,793.90 = 47,063.16/x
  3. Step 3: Cross multiply
    86,807.16x = 119,793.90 × 47,063.16
  4. Step 4: Simplify right side
    86,807.16x = 5,637,879,482.72
  5. Step 5: Solve for x
    x = 5,637,879,482.72/86,807.16
  6. Step 6: Final answer
    x = 64,947.17

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Why These Related Problems?

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