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Finding the Fourth Proportional to 374,432.40, 561,648.60 and 217,065.60

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Solution

The fourth proportional to 374,432.40, 561,648.60 and 217,065.60 is: 325,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,432.40 : 561,648.60 = 217,065.60 : x
  2. Step 2: Convert to fraction form
    374,432.40/561,648.60 = 217,065.60/x
  3. Step 3: Cross multiply
    374,432.40x = 561,648.60 × 217,065.60
  4. Step 4: Simplify right side
    374,432.40x = 121,914,590,348.16
  5. Step 5: Solve for x
    x = 121,914,590,348.16/374,432.40
  6. Step 6: Final answer
    x = 325,598.40

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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.