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Finding the Fourth Proportional to 763,962,510.60, 1,145,943,765.90 and 763,962,510.60

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Solution

The fourth proportional to 763,962,510.60, 1,145,943,765.90 and 763,962,510.60 is: 1,145,943,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,962,510.60 : 1,145,943,765.90 = 763,962,510.60 : x
  2. Step 2: Convert to fraction form
    763,962,510.60/1,145,943,765.90 = 763,962,510.60/x
  3. Step 3: Cross multiply
    763,962,510.60x = 1,145,943,765.90 × 763,962,510.60
  4. Step 4: Simplify right side
    763,962,510.60x = 875,458,076,403,382,784
  5. Step 5: Solve for x
    x = 875,458,076,403,382,784/763,962,510.60
  6. Step 6: Final answer
    x = 1,145,943,765.90

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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.