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Finding the Fourth Proportional to 70,751.58, 97,636.14 and 38,918.58

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Solution

The fourth proportional to 70,751.58, 97,636.14 and 38,918.58 is: 53,707.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,751.58 : 97,636.14 = 38,918.58 : x
  2. Step 2: Convert to fraction form
    70,751.58/97,636.14 = 38,918.58/x
  3. Step 3: Cross multiply
    70,751.58x = 97,636.14 × 38,918.58
  4. Step 4: Simplify right side
    70,751.58x = 3,799,859,925.48
  5. Step 5: Solve for x
    x = 3,799,859,925.48/70,751.58
  6. Step 6: Final answer
    x = 53,707.07

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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.