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Finding the Fourth Proportional to 98,460.77, 135,878.99 and 56,022.03

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Solution

The fourth proportional to 98,460.77, 135,878.99 and 56,022.03 is: 77,312.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,460.77 : 135,878.99 = 56,022.03 : x
  2. Step 2: Convert to fraction form
    98,460.77/135,878.99 = 56,022.03/x
  3. Step 3: Cross multiply
    98,460.77x = 135,878.99 × 56,022.03
  4. Step 4: Simplify right side
    98,460.77x = 7,612,216,574.04
  5. Step 5: Solve for x
    x = 7,612,216,574.04/98,460.77
  6. Step 6: Final answer
    x = 77,312.18

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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.