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Finding the Fourth Proportional to 114,911.40, 172,367.10 and 83,807.40

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Solution

The fourth proportional to 114,911.40, 172,367.10 and 83,807.40 is: 125,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,911.40 : 172,367.10 = 83,807.40 : x
  2. Step 2: Convert to fraction form
    114,911.40/172,367.10 = 83,807.40/x
  3. Step 3: Cross multiply
    114,911.40x = 172,367.10 × 83,807.40
  4. Step 4: Simplify right side
    114,911.40x = 14,445,638,496.54
  5. Step 5: Solve for x
    x = 14,445,638,496.54/114,911.40
  6. Step 6: Final answer
    x = 125,711.10

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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.