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Finding the Fourth Proportional to 111,689.60, 154,132.82 and 60,702.32

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Solution

The fourth proportional to 111,689.60, 154,132.82 and 60,702.32 is: 83,769.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,689.60 : 154,132.82 = 60,702.32 : x
  2. Step 2: Convert to fraction form
    111,689.60/154,132.82 = 60,702.32/x
  3. Step 3: Cross multiply
    111,689.60x = 154,132.82 × 60,702.32
  4. Step 4: Simplify right side
    111,689.60x = 9,356,219,762.14
  5. Step 5: Solve for x
    x = 9,356,219,762.14/111,689.60
  6. Step 6: Final answer
    x = 83,769.84

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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.