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Finding the Fourth Proportional to 228,683.53, 343,079.79 and 78,925.11

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Solution

The fourth proportional to 228,683.53, 343,079.79 and 78,925.11 is: 118,406.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,683.53 : 343,079.79 = 78,925.11 : x
  2. Step 2: Convert to fraction form
    228,683.53/343,079.79 = 78,925.11/x
  3. Step 3: Cross multiply
    228,683.53x = 343,079.79 × 78,925.11
  4. Step 4: Simplify right side
    228,683.53x = 27,077,610,164.53
  5. Step 5: Solve for x
    x = 27,077,610,164.53/228,683.53
  6. Step 6: Final answer
    x = 118,406.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.