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Finding the Fourth Proportional to 316,947.69, 475,417.94 and 77,062.95

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Solution

The fourth proportional to 316,947.69, 475,417.94 and 77,062.95 is: 115,593.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,947.69 : 475,417.94 = 77,062.95 : x
  2. Step 2: Convert to fraction form
    316,947.69/475,417.94 = 77,062.95/x
  3. Step 3: Cross multiply
    316,947.69x = 475,417.94 × 77,062.95
  4. Step 4: Simplify right side
    316,947.69x = 36,637,108,554.01
  5. Step 5: Solve for x
    x = 36,637,108,554.01/316,947.69
  6. Step 6: Final answer
    x = 115,593.55

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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.