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Finding the Fourth Proportional to 216,671.57, 325,154.98 and 76,430.20

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Solution

The fourth proportional to 216,671.57, 325,154.98 and 76,430.20 is: 114,697.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,671.57 : 325,154.98 = 76,430.20 : x
  2. Step 2: Convert to fraction form
    216,671.57/325,154.98 = 76,430.20/x
  3. Step 3: Cross multiply
    216,671.57x = 325,154.98 × 76,430.20
  4. Step 4: Simplify right side
    216,671.57x = 24,851,660,152.40
  5. Step 5: Solve for x
    x = 24,851,660,152.40/216,671.57
  6. Step 6: Final answer
    x = 114,697.37

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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.