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Finding the Fourth Proportional to 111,580.06, 153,984.03 and 61,279.06

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Solution

The fourth proportional to 111,580.06, 153,984.03 and 61,279.06 is: 84,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,580.06 : 153,984.03 = 61,279.06 : x
  2. Step 2: Convert to fraction form
    111,580.06/153,984.03 = 61,279.06/x
  3. Step 3: Cross multiply
    111,580.06x = 153,984.03 × 61,279.06
  4. Step 4: Simplify right side
    111,580.06x = 9,435,996,613.41
  5. Step 5: Solve for x
    x = 9,435,996,613.41/111,580.06
  6. Step 6: Final answer
    x = 84,567.05

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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.