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Finding the Fourth Proportional to 70,807.51, 97,723.70 and 42,515.02

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Solution

The fourth proportional to 70,807.51, 97,723.70 and 42,515.02 is: 58,676.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,807.51 : 97,723.70 = 42,515.02 : x
  2. Step 2: Convert to fraction form
    70,807.51/97,723.70 = 42,515.02/x
  3. Step 3: Cross multiply
    70,807.51x = 97,723.70 × 42,515.02
  4. Step 4: Simplify right side
    70,807.51x = 4,154,725,059.97
  5. Step 5: Solve for x
    x = 4,154,725,059.97/70,807.51
  6. Step 6: Final answer
    x = 58,676.33

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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.