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Finding the Fourth Proportional to 105,368.64, 158,053.10 and 43,039.16

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Solution

The fourth proportional to 105,368.64, 158,053.10 and 43,039.16 is: 64,558.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,368.64 : 158,053.10 = 43,039.16 : x
  2. Step 2: Convert to fraction form
    105,368.64/158,053.10 = 43,039.16/x
  3. Step 3: Cross multiply
    105,368.64x = 158,053.10 × 43,039.16
  4. Step 4: Simplify right side
    105,368.64x = 6,802,472,659.40
  5. Step 5: Solve for x
    x = 6,802,472,659.40/105,368.64
  6. Step 6: Final answer
    x = 64,558.80

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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.