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Finding the Fourth Proportional to 854,347,630.40, 1,281,521,445.60 and 854,347,630.40

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Solution

The fourth proportional to 854,347,630.40, 1,281,521,445.60 and 854,347,630.40 is: 1,281,521,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,347,630.40 : 1,281,521,445.60 = 854,347,630.40 : x
  2. Step 2: Convert to fraction form
    854,347,630.40/1,281,521,445.60 = 854,347,630.40/x
  3. Step 3: Cross multiply
    854,347,630.40x = 1,281,521,445.60 × 854,347,630.40
  4. Step 4: Simplify right side
    854,347,630.40x = 1,094,864,810,355,142,400
  5. Step 5: Solve for x
    x = 1,094,864,810,355,142,400/854,347,630.40
  6. Step 6: Final answer
    x = 1,281,521,445.60

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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.