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Finding the Fourth Proportional to 125,931.50, 173,785.47 and 69,342.74

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Solution

The fourth proportional to 125,931.50, 173,785.47 and 69,342.74 is: 95,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,931.50 : 173,785.47 = 69,342.74 : x
  2. Step 2: Convert to fraction form
    125,931.50/173,785.47 = 69,342.74/x
  3. Step 3: Cross multiply
    125,931.50x = 173,785.47 × 69,342.74
  4. Step 4: Simplify right side
    125,931.50x = 12,050,760,661.99
  5. Step 5: Solve for x
    x = 12,050,760,661.99/125,931.50
  6. Step 6: Final answer
    x = 95,692.98

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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.