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Finding the Fourth Proportional to 153,535.99, 211,895.25 and 85,564.03

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Solution

The fourth proportional to 153,535.99, 211,895.25 and 85,564.03 is: 118,087.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,535.99 : 211,895.25 = 85,564.03 : x
  2. Step 2: Convert to fraction form
    153,535.99/211,895.25 = 85,564.03/x
  3. Step 3: Cross multiply
    153,535.99x = 211,895.25 × 85,564.03
  4. Step 4: Simplify right side
    153,535.99x = 18,130,611,527.86
  5. Step 5: Solve for x
    x = 18,130,611,527.86/153,535.99
  6. Step 6: Final answer
    x = 118,087.05

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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.