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Finding the Fourth Proportional to 73,885.40, 103,702 and 73,885.40

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Solution

The fourth proportional to 73,885.40, 103,702 and 73,885.40 is: 103,702

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,885.40 : 103,702 = 73,885.40 : x
  2. Step 2: Convert to fraction form
    73,885.40/103,702 = 73,885.40/x
  3. Step 3: Cross multiply
    73,885.40x = 103,702 × 73,885.40
  4. Step 4: Simplify right side
    73,885.40x = 7,662,063,750.80
  5. Step 5: Solve for x
    x = 7,662,063,750.80/73,885.40
  6. Step 6: Final answer
    x = 103,702

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.