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Finding the Fourth Proportional to 14,522,689.60, 21,784,034.40 and 13,129,230.40

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Solution

The fourth proportional to 14,522,689.60, 21,784,034.40 and 13,129,230.40 is: 19,693,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,522,689.60 : 21,784,034.40 = 13,129,230.40 : x
  2. Step 2: Convert to fraction form
    14,522,689.60/21,784,034.40 = 13,129,230.40/x
  3. Step 3: Cross multiply
    14,522,689.60x = 21,784,034.40 × 13,129,230.40
  4. Step 4: Simplify right side
    14,522,689.60x = 286,007,606,679,125.75
  5. Step 5: Solve for x
    x = 286,007,606,679,125.75/14,522,689.60
  6. Step 6: Final answer
    x = 19,693,845.60

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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.