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Finding the Fourth Proportional to 94,455.70, 130,348.65 and 51,434.50

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Solution

The fourth proportional to 94,455.70, 130,348.65 and 51,434.50 is: 70,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,455.70 : 130,348.65 = 51,434.50 : x
  2. Step 2: Convert to fraction form
    94,455.70/130,348.65 = 51,434.50/x
  3. Step 3: Cross multiply
    94,455.70x = 130,348.65 × 51,434.50
  4. Step 4: Simplify right side
    94,455.70x = 6,704,417,638.43
  5. Step 5: Solve for x
    x = 6,704,417,638.43/94,455.70
  6. Step 6: Final answer
    x = 70,979.49

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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.