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Finding the Fourth Proportional to 117,076.77, 161,549.58 and 65,394.45

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Solution

The fourth proportional to 117,076.77, 161,549.58 and 65,394.45 is: 90,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,076.77 : 161,549.58 = 65,394.45 : x
  2. Step 2: Convert to fraction form
    117,076.77/161,549.58 = 65,394.45/x
  3. Step 3: Cross multiply
    117,076.77x = 161,549.58 × 65,394.45
  4. Step 4: Simplify right side
    117,076.77x = 10,564,445,931.83
  5. Step 5: Solve for x
    x = 10,564,445,931.83/117,076.77
  6. Step 6: Final answer
    x = 90,235.20

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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.