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Finding the Fourth Proportional to 78,592.14, 108,461.43 and 45,058.14

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Solution

The fourth proportional to 78,592.14, 108,461.43 and 45,058.14 is: 62,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,592.14 : 108,461.43 = 45,058.14 : x
  2. Step 2: Convert to fraction form
    78,592.14/108,461.43 = 45,058.14/x
  3. Step 3: Cross multiply
    78,592.14x = 108,461.43 × 45,058.14
  4. Step 4: Simplify right side
    78,592.14x = 4,887,070,297.54
  5. Step 5: Solve for x
    x = 4,887,070,297.54/78,592.14
  6. Step 6: Final answer
    x = 62,182.69

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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.