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Finding the Fourth Proportional to 636,000.10, 953,708.55 and 280,831.30

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Solution

The fourth proportional to 636,000.10, 953,708.55 and 280,831.30 is: 421,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,000.10 : 953,708.55 = 280,831.30 : x
  2. Step 2: Convert to fraction form
    636,000.10/953,708.55 = 280,831.30/x
  3. Step 3: Cross multiply
    636,000.10x = 953,708.55 × 280,831.30
  4. Step 4: Simplify right side
    636,000.10x = 267,831,211,917.62
  5. Step 5: Solve for x
    x = 267,831,211,917.62/636,000.10
  6. Step 6: Final answer
    x = 421,118.19

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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.