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Finding the Fourth Proportional to 125,653.94, 173,427.66 and 74,656.86

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Solution

The fourth proportional to 125,653.94, 173,427.66 and 74,656.86 is: 103,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,653.94 : 173,427.66 = 74,656.86 : x
  2. Step 2: Convert to fraction form
    125,653.94/173,427.66 = 74,656.86/x
  3. Step 3: Cross multiply
    125,653.94x = 173,427.66 × 74,656.86
  4. Step 4: Simplify right side
    125,653.94x = 12,947,564,532.75
  5. Step 5: Solve for x
    x = 12,947,564,532.75/125,653.94
  6. Step 6: Final answer
    x = 103,041.45

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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.