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Finding the Fourth Proportional to 70,359,872.80, 105,539,809.20 and 24,915,762.40

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Solution

The fourth proportional to 70,359,872.80, 105,539,809.20 and 24,915,762.40 is: 37,373,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,359,872.80 : 105,539,809.20 = 24,915,762.40 : x
  2. Step 2: Convert to fraction form
    70,359,872.80/105,539,809.20 = 24,915,762.40/x
  3. Step 3: Cross multiply
    70,359,872.80x = 105,539,809.20 × 24,915,762.40
  4. Step 4: Simplify right side
    70,359,872.80x = 2,629,604,809,768,534
  5. Step 5: Solve for x
    x = 2,629,604,809,768,534/70,359,872.80
  6. Step 6: Final answer
    x = 37,373,643.60

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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.