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Finding the Fourth Proportional to 51,054.58, 70,461.65 and 28,698.58

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Solution

The fourth proportional to 51,054.58, 70,461.65 and 28,698.58 is: 39,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,054.58 : 70,461.65 = 28,698.58 : x
  2. Step 2: Convert to fraction form
    51,054.58/70,461.65 = 28,698.58/x
  3. Step 3: Cross multiply
    51,054.58x = 70,461.65 × 28,698.58
  4. Step 4: Simplify right side
    51,054.58x = 2,022,149,299.46
  5. Step 5: Solve for x
    x = 2,022,149,299.46/51,054.58
  6. Step 6: Final answer
    x = 39,607.60

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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.