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Finding the Fourth Proportional to 117,730.40, 176,530.80 and 47,530.40

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Solution

The fourth proportional to 117,730.40, 176,530.80 and 47,530.40 is: 71,269.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,730.40 : 176,530.80 = 47,530.40 : x
  2. Step 2: Convert to fraction form
    117,730.40/176,530.80 = 47,530.40/x
  3. Step 3: Cross multiply
    117,730.40x = 176,530.80 × 47,530.40
  4. Step 4: Simplify right side
    117,730.40x = 8,390,579,536.32
  5. Step 5: Solve for x
    x = 8,390,579,536.32/117,730.40
  6. Step 6: Final answer
    x = 71,269.44

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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.