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Finding the Fourth Proportional to 70,643.04, 97,482.48 and 38,813.28

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Solution

The fourth proportional to 70,643.04, 97,482.48 and 38,813.28 is: 53,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,643.04 : 97,482.48 = 38,813.28 : x
  2. Step 2: Convert to fraction form
    70,643.04/97,482.48 = 38,813.28/x
  3. Step 3: Cross multiply
    70,643.04x = 97,482.48 × 38,813.28
  4. Step 4: Simplify right side
    70,643.04x = 3,783,614,791.33
  5. Step 5: Solve for x
    x = 3,783,614,791.33/70,643.04
  6. Step 6: Final answer
    x = 53,559.63

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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.