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Finding the Fourth Proportional to 296,706.88, 445,133.16 and 86,346.64

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Solution

The fourth proportional to 296,706.88, 445,133.16 and 86,346.64 is: 129,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,706.88 : 445,133.16 = 86,346.64 : x
  2. Step 2: Convert to fraction form
    296,706.88/445,133.16 = 86,346.64/x
  3. Step 3: Cross multiply
    296,706.88x = 445,133.16 × 86,346.64
  4. Step 4: Simplify right side
    296,706.88x = 38,435,752,718.58
  5. Step 5: Solve for x
    x = 38,435,752,718.58/296,706.88
  6. Step 6: Final answer
    x = 129,541.16

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1.5x scale

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.