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Finding the Fourth Proportional to 70,615.58, 97,408.82 and 42,304.86

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Solution

The fourth proportional to 70,615.58, 97,408.82 and 42,304.86 is: 58,356.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,615.58 : 97,408.82 = 42,304.86 : x
  2. Step 2: Convert to fraction form
    70,615.58/97,408.82 = 42,304.86/x
  3. Step 3: Cross multiply
    70,615.58x = 97,408.82 × 42,304.86
  4. Step 4: Simplify right side
    70,615.58x = 4,120,866,492.87
  5. Step 5: Solve for x
    x = 4,120,866,492.87/70,615.58
  6. Step 6: Final answer
    x = 58,356.34

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1.5x scale

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.