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Finding the Fourth Proportional to 52,838.70, 72,917.04 and 28,966.38

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Solution

The fourth proportional to 52,838.70, 72,917.04 and 28,966.38 is: 39,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,838.70 : 72,917.04 = 28,966.38 : x
  2. Step 2: Convert to fraction form
    52,838.70/72,917.04 = 28,966.38/x
  3. Step 3: Cross multiply
    52,838.70x = 72,917.04 × 28,966.38
  4. Step 4: Simplify right side
    52,838.70x = 2,112,142,689.12
  5. Step 5: Solve for x
    x = 2,112,142,689.12/52,838.70
  6. Step 6: Final answer
    x = 39,973.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.