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Finding the Fourth Proportional to 88,303, 121,903.30 and 68,114.56

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Solution

The fourth proportional to 88,303, 121,903.30 and 68,114.56 is: 94,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,303 : 121,903.30 = 68,114.56 : x
  2. Step 2: Convert to fraction form
    88,303/121,903.30 = 68,114.56/x
  3. Step 3: Cross multiply
    88,303x = 121,903.30 × 68,114.56
  4. Step 4: Simplify right side
    88,303x = 8,303,389,642.05
  5. Step 5: Solve for x
    x = 8,303,389,642.05/88,303
  6. Step 6: Final answer
    x = 94,032.93

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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.