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Finding the Fourth Proportional to 124,607.81, 171,952.80 and 70,887.80

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Solution

The fourth proportional to 124,607.81, 171,952.80 and 70,887.80 is: 97,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,607.81 : 171,952.80 = 70,887.80 : x
  2. Step 2: Convert to fraction form
    124,607.81/171,952.80 = 70,887.80/x
  3. Step 3: Cross multiply
    124,607.81x = 171,952.80 × 70,887.80
  4. Step 4: Simplify right side
    124,607.81x = 12,189,355,695.84
  5. Step 5: Solve for x
    x = 12,189,355,695.84/124,607.81
  6. Step 6: Final answer
    x = 97,821.76

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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.