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Finding the Fourth Proportional to 84,901.78, 117,159.48 and 48,605.08

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Solution

The fourth proportional to 84,901.78, 117,159.48 and 48,605.08 is: 67,072.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,901.78 : 117,159.48 = 48,605.08 : x
  2. Step 2: Convert to fraction form
    84,901.78/117,159.48 = 48,605.08/x
  3. Step 3: Cross multiply
    84,901.78x = 117,159.48 × 48,605.08
  4. Step 4: Simplify right side
    84,901.78x = 5,694,545,898.16
  5. Step 5: Solve for x
    x = 5,694,545,898.16/84,901.78
  6. Step 6: Final answer
    x = 67,072.16

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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.