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Finding the Fourth Proportional to 64,509,700.40, 96,764,550.60 and 48,385,386.80

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Solution

The fourth proportional to 64,509,700.40, 96,764,550.60 and 48,385,386.80 is: 72,578,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,509,700.40 : 96,764,550.60 = 48,385,386.80 : x
  2. Step 2: Convert to fraction form
    64,509,700.40/96,764,550.60 = 48,385,386.80/x
  3. Step 3: Cross multiply
    64,509,700.40x = 96,764,550.60 × 48,385,386.80
  4. Step 4: Simplify right side
    64,509,700.40x = 4,681,990,209,309,172
  5. Step 5: Solve for x
    x = 4,681,990,209,309,172/64,509,700.40
  6. Step 6: Final answer
    x = 72,578,080.20

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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.