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Finding the Fourth Proportional to 113,295.48, 156,341.70 and 65,549.60

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Solution

The fourth proportional to 113,295.48, 156,341.70 and 65,549.60 is: 90,454.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,295.48 : 156,341.70 = 65,549.60 : x
  2. Step 2: Convert to fraction form
    113,295.48/156,341.70 = 65,549.60/x
  3. Step 3: Cross multiply
    113,295.48x = 156,341.70 × 65,549.60
  4. Step 4: Simplify right side
    113,295.48x = 10,248,135,898.32
  5. Step 5: Solve for x
    x = 10,248,135,898.32/113,295.48
  6. Step 6: Final answer
    x = 90,454.94

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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.