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Finding the Fourth Proportional to 155,878.59, 233,879.64 and 81,045.93

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Solution

The fourth proportional to 155,878.59, 233,879.64 and 81,045.93 is: 121,601.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,878.59 : 233,879.64 = 81,045.93 : x
  2. Step 2: Convert to fraction form
    155,878.59/233,879.64 = 81,045.93/x
  3. Step 3: Cross multiply
    155,878.59x = 233,879.64 × 81,045.93
  4. Step 4: Simplify right side
    155,878.59x = 18,954,992,931.87
  5. Step 5: Solve for x
    x = 18,954,992,931.87/155,878.59
  6. Step 6: Final answer
    x = 121,601.00

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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.