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Finding the Fourth Proportional to 123,035.40, 172,366.20 and 123,035.40

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Solution

The fourth proportional to 123,035.40, 172,366.20 and 123,035.40 is: 172,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,035.40 : 172,366.20 = 123,035.40 : x
  2. Step 2: Convert to fraction form
    123,035.40/172,366.20 = 123,035.40/x
  3. Step 3: Cross multiply
    123,035.40x = 172,366.20 × 123,035.40
  4. Step 4: Simplify right side
    123,035.40x = 21,207,144,363.48
  5. Step 5: Solve for x
    x = 21,207,144,363.48/123,035.40
  6. Step 6: Final answer
    x = 172,366.20

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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.