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Finding the Fourth Proportional to 15,905.70, 22,298.70 and 15,905.70

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Solution

The fourth proportional to 15,905.70, 22,298.70 and 15,905.70 is: 22,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.70 : 22,298.70 = 15,905.70 : x
  2. Step 2: Convert to fraction form
    15,905.70/22,298.70 = 15,905.70/x
  3. Step 3: Cross multiply
    15,905.70x = 22,298.70 × 15,905.70
  4. Step 4: Simplify right side
    15,905.70x = 354,676,432.59
  5. Step 5: Solve for x
    x = 354,676,432.59/15,905.70
  6. Step 6: Final answer
    x = 22,298.70

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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.