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Finding the Fourth Proportional to 60,639,368.40, 90,959,052.60 and 17,509,978.80

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Solution

The fourth proportional to 60,639,368.40, 90,959,052.60 and 17,509,978.80 is: 26,264,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,639,368.40 : 90,959,052.60 = 17,509,978.80 : x
  2. Step 2: Convert to fraction form
    60,639,368.40/90,959,052.60 = 17,509,978.80/x
  3. Step 3: Cross multiply
    60,639,368.40x = 90,959,052.60 × 17,509,978.80
  4. Step 4: Simplify right side
    60,639,368.40x = 1,592,691,082,694,084.75
  5. Step 5: Solve for x
    x = 1,592,691,082,694,084.75/60,639,368.40
  6. Step 6: Final answer
    x = 26,264,968.20

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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.