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Finding the Fourth Proportional to 70,803.69, 97,711.70 and 38,973.93

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Solution

The fourth proportional to 70,803.69, 97,711.70 and 38,973.93 is: 53,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,803.69 : 97,711.70 = 38,973.93 : x
  2. Step 2: Convert to fraction form
    70,803.69/97,711.70 = 38,973.93/x
  3. Step 3: Cross multiply
    70,803.69x = 97,711.70 × 38,973.93
  4. Step 4: Simplify right side
    70,803.69x = 3,808,208,761.11
  5. Step 5: Solve for x
    x = 3,808,208,761.11/70,803.69
  6. Step 6: Final answer
    x = 53,785.46

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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.