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Finding the Fourth Proportional to 127,216.80, 190,436.40 and 127,216.80

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Solution

The fourth proportional to 127,216.80, 190,436.40 and 127,216.80 is: 190,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,216.80 : 190,436.40 = 127,216.80 : x
  2. Step 2: Convert to fraction form
    127,216.80/190,436.40 = 127,216.80/x
  3. Step 3: Cross multiply
    127,216.80x = 190,436.40 × 127,216.80
  4. Step 4: Simplify right side
    127,216.80x = 24,226,709,411.52
  5. Step 5: Solve for x
    x = 24,226,709,411.52/127,216.80
  6. Step 6: Final answer
    x = 190,436.40

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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.