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Finding the Fourth Proportional to 70,648,636.80, 106,020,194.40 and 32,290,406.40

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Solution

The fourth proportional to 70,648,636.80, 106,020,194.40 and 32,290,406.40 is: 48,457,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,648,636.80 : 106,020,194.40 = 32,290,406.40 : x
  2. Step 2: Convert to fraction form
    70,648,636.80/106,020,194.40 = 32,290,406.40/x
  3. Step 3: Cross multiply
    70,648,636.80x = 106,020,194.40 × 32,290,406.40
  4. Step 4: Simplify right side
    70,648,636.80x = 3,423,435,163,783,004
  5. Step 5: Solve for x
    x = 3,423,435,163,783,004/70,648,636.80
  6. Step 6: Final answer
    x = 48,457,200.58

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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.