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Finding the Fourth Proportional to 106,870.82, 147,483.14 and 61,556.76

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Solution

The fourth proportional to 106,870.82, 147,483.14 and 61,556.76 is: 84,949.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,870.82 : 147,483.14 = 61,556.76 : x
  2. Step 2: Convert to fraction form
    106,870.82/147,483.14 = 61,556.76/x
  3. Step 3: Cross multiply
    106,870.82x = 147,483.14 × 61,556.76
  4. Step 4: Simplify right side
    106,870.82x = 9,078,583,945.24
  5. Step 5: Solve for x
    x = 9,078,583,945.24/106,870.82
  6. Step 6: Final answer
    x = 84,949.14

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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.