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Finding the Fourth Proportional to 111,376.16, 153,699 and 60,390.58

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Solution

The fourth proportional to 111,376.16, 153,699 and 60,390.58 is: 83,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,376.16 : 153,699 = 60,390.58 : x
  2. Step 2: Convert to fraction form
    111,376.16/153,699 = 60,390.58/x
  3. Step 3: Cross multiply
    111,376.16x = 153,699 × 60,390.58
  4. Step 4: Simplify right side
    111,376.16x = 9,281,971,755.42
  5. Step 5: Solve for x
    x = 9,281,971,755.42/111,376.16
  6. Step 6: Final answer
    x = 83,338.95

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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.