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Finding the Fourth Proportional to 100,953.60, 151,430.40 and 61,490.40

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Solution

The fourth proportional to 100,953.60, 151,430.40 and 61,490.40 is: 92,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,953.60 : 151,430.40 = 61,490.40 : x
  2. Step 2: Convert to fraction form
    100,953.60/151,430.40 = 61,490.40/x
  3. Step 3: Cross multiply
    100,953.60x = 151,430.40 × 61,490.40
  4. Step 4: Simplify right side
    100,953.60x = 9,311,515,868.16
  5. Step 5: Solve for x
    x = 9,311,515,868.16/100,953.60
  6. Step 6: Final answer
    x = 92,235.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.