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Finding the Fourth Proportional to 70,737.80, 97,585.44 and 42,394.28

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Solution

The fourth proportional to 70,737.80, 97,585.44 and 42,394.28 is: 58,484.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,737.80 : 97,585.44 = 42,394.28 : x
  2. Step 2: Convert to fraction form
    70,737.80/97,585.44 = 42,394.28/x
  3. Step 3: Cross multiply
    70,737.80x = 97,585.44 × 42,394.28
  4. Step 4: Simplify right side
    70,737.80x = 4,137,064,467.28
  5. Step 5: Solve for x
    x = 4,137,064,467.28/70,737.80
  6. Step 6: Final answer
    x = 58,484.49

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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.