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Finding the Fourth Proportional to 98,804.16, 136,337.04 and 56,360.16

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Solution

The fourth proportional to 98,804.16, 136,337.04 and 56,360.16 is: 77,769.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,804.16 : 136,337.04 = 56,360.16 : x
  2. Step 2: Convert to fraction form
    98,804.16/136,337.04 = 56,360.16/x
  3. Step 3: Cross multiply
    98,804.16x = 136,337.04 × 56,360.16
  4. Step 4: Simplify right side
    98,804.16x = 7,683,977,388.33
  5. Step 5: Solve for x
    x = 7,683,977,388.33/98,804.16
  6. Step 6: Final answer
    x = 77,769.78

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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.