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Finding the Fourth Proportional to 70,373.94, 97,112.40 and 38,536.70

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Solution

The fourth proportional to 70,373.94, 97,112.40 and 38,536.70 is: 53,178.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.94 : 97,112.40 = 38,536.70 : x
  2. Step 2: Convert to fraction form
    70,373.94/97,112.40 = 38,536.70/x
  3. Step 3: Cross multiply
    70,373.94x = 97,112.40 × 38,536.70
  4. Step 4: Simplify right side
    70,373.94x = 3,742,390,939.52
  5. Step 5: Solve for x
    x = 3,742,390,939.52/70,373.94
  6. Step 6: Final answer
    x = 53,178.65

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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.