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Finding the Fourth Proportional to 325,863,642.60, 488,795,463.90 and 121,365,145.80

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Solution

The fourth proportional to 325,863,642.60, 488,795,463.90 and 121,365,145.80 is: 182,047,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,863,642.60 : 488,795,463.90 = 121,365,145.80 : x
  2. Step 2: Convert to fraction form
    325,863,642.60/488,795,463.90 = 121,365,145.80/x
  3. Step 3: Cross multiply
    325,863,642.60x = 488,795,463.90 × 121,365,145.80
  4. Step 4: Simplify right side
    325,863,642.60x = 59,322,732,742,602,136
  5. Step 5: Solve for x
    x = 59,322,732,742,602,136/325,863,642.60
  6. Step 6: Final answer
    x = 182,047,718.70

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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.