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Finding the Fourth Proportional to 70,919.34, 97,909.12 and 46,790.35

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Solution

The fourth proportional to 70,919.34, 97,909.12 and 46,790.35 is: 64,597.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,919.34 : 97,909.12 = 46,790.35 : x
  2. Step 2: Convert to fraction form
    70,919.34/97,909.12 = 46,790.35/x
  3. Step 3: Cross multiply
    70,919.34x = 97,909.12 × 46,790.35
  4. Step 4: Simplify right side
    70,919.34x = 4,581,201,992.99
  5. Step 5: Solve for x
    x = 4,581,201,992.99/70,919.34
  6. Step 6: Final answer
    x = 64,597.36

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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.