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Finding the Fourth Proportional to 113,554.83, 156,627.70 and 65,808.98

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Solution

The fourth proportional to 113,554.83, 156,627.70 and 65,808.98 is: 90,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,554.83 : 156,627.70 = 65,808.98 : x
  2. Step 2: Convert to fraction form
    113,554.83/156,627.70 = 65,808.98/x
  3. Step 3: Cross multiply
    113,554.83x = 156,627.70 × 65,808.98
  4. Step 4: Simplify right side
    113,554.83x = 10,307,509,176.75
  5. Step 5: Solve for x
    x = 10,307,509,176.75/113,554.83
  6. Step 6: Final answer
    x = 90,771.21

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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.