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Finding the Fourth Proportional to 70,583,728.80, 105,651,644.40 and 70,583,728.80

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Solution

The fourth proportional to 70,583,728.80, 105,651,644.40 and 70,583,728.80 is: 105,651,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,583,728.80 : 105,651,644.40 = 70,583,728.80 : x
  2. Step 2: Convert to fraction form
    70,583,728.80/105,651,644.40 = 70,583,728.80/x
  3. Step 3: Cross multiply
    70,583,728.80x = 105,651,644.40 × 70,583,728.80
  4. Step 4: Simplify right side
    70,583,728.80x = 7,457,287,015,603,639
  5. Step 5: Solve for x
    x = 7,457,287,015,603,639/70,583,728.80
  6. Step 6: Final answer
    x = 105,651,644.40

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1.5x scale

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.