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Finding the Fourth Proportional to 111,368.16, 153,684 and 61,066.08

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Solution

The fourth proportional to 111,368.16, 153,684 and 61,066.08 is: 84,268.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,368.16 : 153,684 = 61,066.08 : x
  2. Step 2: Convert to fraction form
    111,368.16/153,684 = 61,066.08/x
  3. Step 3: Cross multiply
    111,368.16x = 153,684 × 61,066.08
  4. Step 4: Simplify right side
    111,368.16x = 9,384,879,438.72
  5. Step 5: Solve for x
    x = 9,384,879,438.72/111,368.16
  6. Step 6: Final answer
    x = 84,268.96

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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.