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Finding the Fourth Proportional to 74,887,312.30, 105,144,568.10 and 74,887,312.30

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Solution

The fourth proportional to 74,887,312.30, 105,144,568.10 and 74,887,312.30 is: 105,144,568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,887,312.30 : 105,144,568.10 = 74,887,312.30 : x
  2. Step 2: Convert to fraction form
    74,887,312.30/105,144,568.10 = 74,887,312.30/x
  3. Step 3: Cross multiply
    74,887,312.30x = 105,144,568.10 × 74,887,312.30
  4. Step 4: Simplify right side
    74,887,312.30x = 7,873,994,107,953,317
  5. Step 5: Solve for x
    x = 7,873,994,107,953,317/74,887,312.30
  6. Step 6: Final answer
    x = 105,144,568.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.