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Finding the Fourth Proportional to 124,368.82, 171,629.55 and 70,656.78

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Solution

The fourth proportional to 124,368.82, 171,629.55 and 70,656.78 is: 97,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,368.82 : 171,629.55 = 70,656.78 : x
  2. Step 2: Convert to fraction form
    124,368.82/171,629.55 = 70,656.78/x
  3. Step 3: Cross multiply
    124,368.82x = 171,629.55 × 70,656.78
  4. Step 4: Simplify right side
    124,368.82x = 12,126,791,218.67
  5. Step 5: Solve for x
    x = 12,126,791,218.67/124,368.82
  6. Step 6: Final answer
    x = 97,506.69

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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.