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Finding the Fourth Proportional to 887,857,718.40, 1,245,041,539.20 and 887,857,718.40

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Solution

The fourth proportional to 887,857,718.40, 1,245,041,539.20 and 887,857,718.40 is: 1,245,041,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,857,718.40 : 1,245,041,539.20 = 887,857,718.40 : x
  2. Step 2: Convert to fraction form
    887,857,718.40/1,245,041,539.20 = 887,857,718.40/x
  3. Step 3: Cross multiply
    887,857,718.40x = 1,245,041,539.20 × 887,857,718.40
  4. Step 4: Simplify right side
    887,857,718.40x = 1,105,419,740,307,336,192
  5. Step 5: Solve for x
    x = 1,105,419,740,307,336,192/887,857,718.40
  6. Step 6: Final answer
    x = 1,245,041,539.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.