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Finding the Fourth Proportional to 104,702.40, 156,669.60 and 77,054.40

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Solution

The fourth proportional to 104,702.40, 156,669.60 and 77,054.40 is: 115,299.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,702.40 : 156,669.60 = 77,054.40 : x
  2. Step 2: Convert to fraction form
    104,702.40/156,669.60 = 77,054.40/x
  3. Step 3: Cross multiply
    104,702.40x = 156,669.60 × 77,054.40
  4. Step 4: Simplify right side
    104,702.40x = 12,072,082,026.24
  5. Step 5: Solve for x
    x = 12,072,082,026.24/104,702.40
  6. Step 6: Final answer
    x = 115,299.00

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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.