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Finding the Fourth Proportional to 124,496.66, 171,756.42 and 76,666.98

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Solution

The fourth proportional to 124,496.66, 171,756.42 and 76,666.98 is: 105,770.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,496.66 : 171,756.42 = 76,666.98 : x
  2. Step 2: Convert to fraction form
    124,496.66/171,756.42 = 76,666.98/x
  3. Step 3: Cross multiply
    124,496.66x = 171,756.42 × 76,666.98
  4. Step 4: Simplify right side
    124,496.66x = 13,168,046,017.01
  5. Step 5: Solve for x
    x = 13,168,046,017.01/124,496.66
  6. Step 6: Final answer
    x = 105,770.28

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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.