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Finding the Fourth Proportional to 115,903.80, 173,855.70 and 56,777.40

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Solution

The fourth proportional to 115,903.80, 173,855.70 and 56,777.40 is: 85,166.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,903.80 : 173,855.70 = 56,777.40 : x
  2. Step 2: Convert to fraction form
    115,903.80/173,855.70 = 56,777.40/x
  3. Step 3: Cross multiply
    115,903.80x = 173,855.70 × 56,777.40
  4. Step 4: Simplify right side
    115,903.80x = 9,871,074,621.18
  5. Step 5: Solve for x
    x = 9,871,074,621.18/115,903.80
  6. Step 6: Final answer
    x = 85,166.10

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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.