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Finding the Fourth Proportional to 119,114.78, 164,378.51 and 64,666.91

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Solution

The fourth proportional to 119,114.78, 164,378.51 and 64,666.91 is: 89,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,114.78 : 164,378.51 = 64,666.91 : x
  2. Step 2: Convert to fraction form
    119,114.78/164,378.51 = 64,666.91/x
  3. Step 3: Cross multiply
    119,114.78x = 164,378.51 × 64,666.91
  4. Step 4: Simplify right side
    119,114.78x = 10,629,850,712.33
  5. Step 5: Solve for x
    x = 10,629,850,712.33/119,114.78
  6. Step 6: Final answer
    x = 89,240.40

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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.