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Finding the Fourth Proportional to 70,641.96, 97,486.54 and 38,810.88

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Solution

The fourth proportional to 70,641.96, 97,486.54 and 38,810.88 is: 53,559.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,641.96 : 97,486.54 = 38,810.88 : x
  2. Step 2: Convert to fraction form
    70,641.96/97,486.54 = 38,810.88/x
  3. Step 3: Cross multiply
    70,641.96x = 97,486.54 × 38,810.88
  4. Step 4: Simplify right side
    70,641.96x = 3,783,538,308.53
  5. Step 5: Solve for x
    x = 3,783,538,308.53/70,641.96
  6. Step 6: Final answer
    x = 53,559.36

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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.