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Finding the Fourth Proportional to 195,655.80, 293,483.70 and 77,279.16

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Solution

The fourth proportional to 195,655.80, 293,483.70 and 77,279.16 is: 115,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,655.80 : 293,483.70 = 77,279.16 : x
  2. Step 2: Convert to fraction form
    195,655.80/293,483.70 = 77,279.16/x
  3. Step 3: Cross multiply
    195,655.80x = 293,483.70 × 77,279.16
  4. Step 4: Simplify right side
    195,655.80x = 22,680,173,809.69
  5. Step 5: Solve for x
    x = 22,680,173,809.69/195,655.80
  6. Step 6: Final answer
    x = 115,918.74

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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.