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Finding the Fourth Proportional to 887,835,915.90, 1,245,011,015.70 and 887,835,915.90

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Solution

The fourth proportional to 887,835,915.90, 1,245,011,015.70 and 887,835,915.90 is: 1,245,011,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,835,915.90 : 1,245,011,015.70 = 887,835,915.90 : x
  2. Step 2: Convert to fraction form
    887,835,915.90/1,245,011,015.70 = 887,835,915.90/x
  3. Step 3: Cross multiply
    887,835,915.90x = 1,245,011,015.70 × 887,835,915.90
  4. Step 4: Simplify right side
    887,835,915.90x = 1,105,365,495,429,598,848
  5. Step 5: Solve for x
    x = 1,105,365,495,429,598,848/887,835,915.90
  6. Step 6: Final answer
    x = 1,245,011,015.70

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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.