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Finding the Fourth Proportional to 111,066.55, 153,223.16 and 65,102.89

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Solution

The fourth proportional to 111,066.55, 153,223.16 and 65,102.89 is: 89,813.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,066.55 : 153,223.16 = 65,102.89 : x
  2. Step 2: Convert to fraction form
    111,066.55/153,223.16 = 65,102.89/x
  3. Step 3: Cross multiply
    111,066.55x = 153,223.16 × 65,102.89
  4. Step 4: Simplify right side
    111,066.55x = 9,975,270,475.86
  5. Step 5: Solve for x
    x = 9,975,270,475.86/111,066.55
  6. Step 6: Final answer
    x = 89,813.46

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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.