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Finding the Fourth Proportional to 125,931.76, 188,875.72 and 47,046.64

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Solution

The fourth proportional to 125,931.76, 188,875.72 and 47,046.64 is: 70,561.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,931.76 : 188,875.72 = 47,046.64 : x
  2. Step 2: Convert to fraction form
    125,931.76/188,875.72 = 47,046.64/x
  3. Step 3: Cross multiply
    125,931.76x = 188,875.72 × 47,046.64
  4. Step 4: Simplify right side
    125,931.76x = 8,885,968,003.58
  5. Step 5: Solve for x
    x = 8,885,968,003.58/125,931.76
  6. Step 6: Final answer
    x = 70,561.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.