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Finding the Fourth Proportional to 70,437.60, 105,672.24 and 26,064.40

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Solution

The fourth proportional to 70,437.60, 105,672.24 and 26,064.40 is: 39,102.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,437.60 : 105,672.24 = 26,064.40 : x
  2. Step 2: Convert to fraction form
    70,437.60/105,672.24 = 26,064.40/x
  3. Step 3: Cross multiply
    70,437.60x = 105,672.24 × 26,064.40
  4. Step 4: Simplify right side
    70,437.60x = 2,754,283,532.26
  5. Step 5: Solve for x
    x = 2,754,283,532.26/70,437.60
  6. Step 6: Final answer
    x = 39,102.46

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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.