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Finding the Fourth Proportional to 88,875.40, 133,313.10 and 65,255.80

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Solution

The fourth proportional to 88,875.40, 133,313.10 and 65,255.80 is: 97,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,875.40 : 133,313.10 = 65,255.80 : x
  2. Step 2: Convert to fraction form
    88,875.40/133,313.10 = 65,255.80/x
  3. Step 3: Cross multiply
    88,875.40x = 133,313.10 × 65,255.80
  4. Step 4: Simplify right side
    88,875.40x = 8,699,452,990.98
  5. Step 5: Solve for x
    x = 8,699,452,990.98/88,875.40
  6. Step 6: Final answer
    x = 97,883.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.