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Finding the Fourth Proportional to 84,876.51, 127,822.53 and 77,309.83

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Solution

The fourth proportional to 84,876.51, 127,822.53 and 77,309.83 is: 116,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,876.51 : 127,822.53 = 77,309.83 : x
  2. Step 2: Convert to fraction form
    84,876.51/127,822.53 = 77,309.83/x
  3. Step 3: Cross multiply
    84,876.51x = 127,822.53 × 77,309.83
  4. Step 4: Simplify right side
    84,876.51x = 9,881,938,402.70
  5. Step 5: Solve for x
    x = 9,881,938,402.70/84,876.51
  6. Step 6: Final answer
    x = 116,427.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.