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Finding the Fourth Proportional to 70,915,848.40, 106,377,271.80 and 36,903,624.40

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Solution

The fourth proportional to 70,915,848.40, 106,377,271.80 and 36,903,624.40 is: 55,357,257.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915,848.40 : 106,377,271.80 = 36,903,624.40 : x
  2. Step 2: Convert to fraction form
    70,915,848.40/106,377,271.80 = 36,903,624.40/x
  3. Step 3: Cross multiply
    70,915,848.40x = 106,377,271.80 × 36,903,624.40
  4. Step 4: Simplify right side
    70,915,848.40x = 3,925,706,883,203,911.50
  5. Step 5: Solve for x
    x = 3,925,706,883,203,911.50/70,915,848.40
  6. Step 6: Final answer
    x = 55,357,257.54

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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.