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Finding the Fourth Proportional to 65,091.40, 97,421.10 and 47,271.40

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Solution

The fourth proportional to 65,091.40, 97,421.10 and 47,271.40 is: 70,750.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,091.40 : 97,421.10 = 47,271.40 : x
  2. Step 2: Convert to fraction form
    65,091.40/97,421.10 = 47,271.40/x
  3. Step 3: Cross multiply
    65,091.40x = 97,421.10 × 47,271.40
  4. Step 4: Simplify right side
    65,091.40x = 4,605,231,786.54
  5. Step 5: Solve for x
    x = 4,605,231,786.54/65,091.40
  6. Step 6: Final answer
    x = 70,750.23

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1.5x scale

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.