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Finding the Fourth Proportional to 103,574.64, 142,956.60 and 73,328.52

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Solution

The fourth proportional to 103,574.64, 142,956.60 and 73,328.52 is: 101,210.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,574.64 : 142,956.60 = 73,328.52 : x
  2. Step 2: Convert to fraction form
    103,574.64/142,956.60 = 73,328.52/x
  3. Step 3: Cross multiply
    103,574.64x = 142,956.60 × 73,328.52
  4. Step 4: Simplify right side
    103,574.64x = 10,482,795,902.23
  5. Step 5: Solve for x
    x = 10,482,795,902.23/103,574.64
  6. Step 6: Final answer
    x = 101,210.06

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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.