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Finding the Fourth Proportional to 124,408.50, 171,683.78 and 70,693.58

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Solution

The fourth proportional to 124,408.50, 171,683.78 and 70,693.58 is: 97,557.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,408.50 : 171,683.78 = 70,693.58 : x
  2. Step 2: Convert to fraction form
    124,408.50/171,683.78 = 70,693.58/x
  3. Step 3: Cross multiply
    124,408.50x = 171,683.78 × 70,693.58
  4. Step 4: Simplify right side
    124,408.50x = 12,136,939,824.25
  5. Step 5: Solve for x
    x = 12,136,939,824.25/124,408.50
  6. Step 6: Final answer
    x = 97,557.16

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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.