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Finding the Fourth Proportional to 114,347.20, 171,520.80 and 77,022.40

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Solution

The fourth proportional to 114,347.20, 171,520.80 and 77,022.40 is: 115,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,347.20 : 171,520.80 = 77,022.40 : x
  2. Step 2: Convert to fraction form
    114,347.20/171,520.80 = 77,022.40/x
  3. Step 3: Cross multiply
    114,347.20x = 171,520.80 × 77,022.40
  4. Step 4: Simplify right side
    114,347.20x = 13,210,943,665.92
  5. Step 5: Solve for x
    x = 13,210,943,665.92/114,347.20
  6. Step 6: Final answer
    x = 115,533.60

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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.