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Finding the Fourth Proportional to 81,798.64, 112,881.56 and 46,470.64

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Solution

The fourth proportional to 81,798.64, 112,881.56 and 46,470.64 is: 64,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798.64 : 112,881.56 = 46,470.64 : x
  2. Step 2: Convert to fraction form
    81,798.64/112,881.56 = 46,470.64/x
  3. Step 3: Cross multiply
    81,798.64x = 112,881.56 × 46,470.64
  4. Step 4: Simplify right side
    81,798.64x = 5,245,678,337.40
  5. Step 5: Solve for x
    x = 5,245,678,337.40/81,798.64
  6. Step 6: Final answer
    x = 64,129.16

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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.