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Finding the Fourth Proportional to 874,051,611.60, 1,311,077,417.40 and 874,051,611.60

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Solution

The fourth proportional to 874,051,611.60, 1,311,077,417.40 and 874,051,611.60 is: 1,311,077,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,051,611.60 : 1,311,077,417.40 = 874,051,611.60 : x
  2. Step 2: Convert to fraction form
    874,051,611.60/1,311,077,417.40 = 874,051,611.60/x
  3. Step 3: Cross multiply
    874,051,611.60x = 1,311,077,417.40 × 874,051,611.60
  4. Step 4: Simplify right side
    874,051,611.60x = 1,145,949,329,610,835,968
  5. Step 5: Solve for x
    x = 1,145,949,329,610,835,968/874,051,611.60
  6. Step 6: Final answer
    x = 1,311,077,417.40

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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.