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Finding the Fourth Proportional to 86,490.81, 119,357.26 and 46,746.81

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Solution

The fourth proportional to 86,490.81, 119,357.26 and 46,746.81 is: 64,510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,490.81 : 119,357.26 = 46,746.81 : x
  2. Step 2: Convert to fraction form
    86,490.81/119,357.26 = 46,746.81/x
  3. Step 3: Cross multiply
    86,490.81x = 119,357.26 × 46,746.81
  4. Step 4: Simplify right side
    86,490.81x = 5,579,571,155.34
  5. Step 5: Solve for x
    x = 5,579,571,155.34/86,490.81
  6. Step 6: Final answer
    x = 64,510.57

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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.