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Finding the Fourth Proportional to 212,573,654.40, 318,293,611.20 and 212,573,654.40

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Solution

The fourth proportional to 212,573,654.40, 318,293,611.20 and 212,573,654.40 is: 318,293,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,573,654.40 : 318,293,611.20 = 212,573,654.40 : x
  2. Step 2: Convert to fraction form
    212,573,654.40/318,293,611.20 = 212,573,654.40/x
  3. Step 3: Cross multiply
    212,573,654.40x = 318,293,611.20 × 212,573,654.40
  4. Step 4: Simplify right side
    212,573,654.40x = 67,660,836,104,956,768
  5. Step 5: Solve for x
    x = 67,660,836,104,956,768/212,573,654.40
  6. Step 6: Final answer
    x = 318,293,611.20

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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.