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Finding the Fourth Proportional to 70,075.80, 96,702.78 and 38,245.08

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Solution

The fourth proportional to 70,075.80, 96,702.78 and 38,245.08 is: 52,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,075.80 : 96,702.78 = 38,245.08 : x
  2. Step 2: Convert to fraction form
    70,075.80/96,702.78 = 38,245.08/x
  3. Step 3: Cross multiply
    70,075.80x = 96,702.78 × 38,245.08
  4. Step 4: Simplify right side
    70,075.80x = 3,698,405,557.32
  5. Step 5: Solve for x
    x = 3,698,405,557.32/70,075.80
  6. Step 6: Final answer
    x = 52,777.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.