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Finding the Fourth Proportional to 64,913,643.89, 89,580,847.85 and 35,144,286.02

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Solution

The fourth proportional to 64,913,643.89, 89,580,847.85 and 35,144,286.02 is: 48,499,125.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,913,643.89 : 89,580,847.85 = 35,144,286.02 : x
  2. Step 2: Convert to fraction form
    64,913,643.89/89,580,847.85 = 35,144,286.02/x
  3. Step 3: Cross multiply
    64,913,643.89x = 89,580,847.85 × 35,144,286.02
  4. Step 4: Simplify right side
    64,913,643.89x = 3,148,254,939,066,315
  5. Step 5: Solve for x
    x = 3,148,254,939,066,315/64,913,643.89
  6. Step 6: Final answer
    x = 48,499,125.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.