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Finding the Fourth Proportional to 124,478.64, 171,751.02 and 70,759.44

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Solution

The fourth proportional to 124,478.64, 171,751.02 and 70,759.44 is: 97,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,478.64 : 171,751.02 = 70,759.44 : x
  2. Step 2: Convert to fraction form
    124,478.64/171,751.02 = 70,759.44/x
  3. Step 3: Cross multiply
    124,478.64x = 171,751.02 × 70,759.44
  4. Step 4: Simplify right side
    124,478.64x = 12,153,005,994.63
  5. Step 5: Solve for x
    x = 12,153,005,994.63/124,478.64
  6. Step 6: Final answer
    x = 97,631.26

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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.