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Finding the Fourth Proportional to 638,411.60, 956,839.80 and 283,048.40

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Solution

The fourth proportional to 638,411.60, 956,839.80 and 283,048.40 is: 424,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,411.60 : 956,839.80 = 283,048.40 : x
  2. Step 2: Convert to fraction form
    638,411.60/956,839.80 = 283,048.40/x
  3. Step 3: Cross multiply
    638,411.60x = 956,839.80 × 283,048.40
  4. Step 4: Simplify right side
    638,411.60x = 270,831,974,446.32
  5. Step 5: Solve for x
    x = 270,831,974,446.32/638,411.60
  6. Step 6: Final answer
    x = 424,227.84

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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.