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Finding the Fourth Proportional to 873,780,672.30, 1,310,671,008.45 and 786,104,717.10

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Solution

The fourth proportional to 873,780,672.30, 1,310,671,008.45 and 786,104,717.10 is: 1,179,157,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,780,672.30 : 1,310,671,008.45 = 786,104,717.10 : x
  2. Step 2: Convert to fraction form
    873,780,672.30/1,310,671,008.45 = 786,104,717.10/x
  3. Step 3: Cross multiply
    873,780,672.30x = 1,310,671,008.45 × 786,104,717.10
  4. Step 4: Simplify right side
    873,780,672.30x = 1,030,324,662,308,759,040
  5. Step 5: Solve for x
    x = 1,030,324,662,308,759,040/873,780,672.30
  6. Step 6: Final answer
    x = 1,179,157,075.65

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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.