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Finding the Fourth Proportional to 98,898.54, 136,493.91 and 56,459.58

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Solution

The fourth proportional to 98,898.54, 136,493.91 and 56,459.58 is: 77,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,898.54 : 136,493.91 = 56,459.58 : x
  2. Step 2: Convert to fraction form
    98,898.54/136,493.91 = 56,459.58/x
  3. Step 3: Cross multiply
    98,898.54x = 136,493.91 × 56,459.58
  4. Step 4: Simplify right side
    98,898.54x = 7,706,388,831.16
  5. Step 5: Solve for x
    x = 7,706,388,831.16/98,898.54
  6. Step 6: Final answer
    x = 77,922.17

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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.