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Finding the Fourth Proportional to 9,374.04, 12,938.40 and 5,648.04

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Solution

The fourth proportional to 9,374.04, 12,938.40 and 5,648.04 is: 7,795.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,374.04 : 12,938.40 = 5,648.04 : x
  2. Step 2: Convert to fraction form
    9,374.04/12,938.40 = 5,648.04/x
  3. Step 3: Cross multiply
    9,374.04x = 12,938.40 × 5,648.04
  4. Step 4: Simplify right side
    9,374.04x = 73,076,600.74
  5. Step 5: Solve for x
    x = 73,076,600.74/9,374.04
  6. Step 6: Final answer
    x = 7,795.64

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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.