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Finding the Fourth Proportional to 384,555.74, 530,683.90 and 223,505.06

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Solution

The fourth proportional to 384,555.74, 530,683.90 and 223,505.06 is: 308,435.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,555.74 : 530,683.90 = 223,505.06 : x
  2. Step 2: Convert to fraction form
    384,555.74/530,683.90 = 223,505.06/x
  3. Step 3: Cross multiply
    384,555.74x = 530,683.90 × 223,505.06
  4. Step 4: Simplify right side
    384,555.74x = 118,610,533,698.35
  5. Step 5: Solve for x
    x = 118,610,533,698.35/384,555.74
  6. Step 6: Final answer
    x = 308,435.22

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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.