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Finding the Fourth Proportional to 48,465.40, 72,702.90 and 16,870.60

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Solution

The fourth proportional to 48,465.40, 72,702.90 and 16,870.60 is: 25,307.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,465.40 : 72,702.90 = 16,870.60 : x
  2. Step 2: Convert to fraction form
    48,465.40/72,702.90 = 16,870.60/x
  3. Step 3: Cross multiply
    48,465.40x = 72,702.90 × 16,870.60
  4. Step 4: Simplify right side
    48,465.40x = 1,226,541,544.74
  5. Step 5: Solve for x
    x = 1,226,541,544.74/48,465.40
  6. Step 6: Final answer
    x = 25,307.57

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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.