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Finding the Fourth Proportional to 14,640,641.60, 21,960,962.40 and 10,861,505.60

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Solution

The fourth proportional to 14,640,641.60, 21,960,962.40 and 10,861,505.60 is: 16,292,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640,641.60 : 21,960,962.40 = 10,861,505.60 : x
  2. Step 2: Convert to fraction form
    14,640,641.60/21,960,962.40 = 10,861,505.60/x
  3. Step 3: Cross multiply
    14,640,641.60x = 21,960,962.40 × 10,861,505.60
  4. Step 4: Simplify right side
    14,640,641.60x = 238,529,116,088,989.41
  5. Step 5: Solve for x
    x = 238,529,116,088,989.41/14,640,641.60
  6. Step 6: Final answer
    x = 16,292,258.40

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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.