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Finding the Fourth Proportional to 70,308.79, 97,071.41 and 62,742.11

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Solution

The fourth proportional to 70,308.79, 97,071.41 and 62,742.11 is: 86,624.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,308.79 : 97,071.41 = 62,742.11 : x
  2. Step 2: Convert to fraction form
    70,308.79/97,071.41 = 62,742.11/x
  3. Step 3: Cross multiply
    70,308.79x = 97,071.41 × 62,742.11
  4. Step 4: Simplify right side
    70,308.79x = 6,090,465,084.08
  5. Step 5: Solve for x
    x = 6,090,465,084.08/70,308.79
  6. Step 6: Final answer
    x = 86,624.52

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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.