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Finding the Fourth Proportional to 35,661.60, 53,492.40 and 31,287.60

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Solution

The fourth proportional to 35,661.60, 53,492.40 and 31,287.60 is: 46,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,661.60 : 53,492.40 = 31,287.60 : x
  2. Step 2: Convert to fraction form
    35,661.60/53,492.40 = 31,287.60/x
  3. Step 3: Cross multiply
    35,661.60x = 53,492.40 × 31,287.60
  4. Step 4: Simplify right side
    35,661.60x = 1,673,648,814.24
  5. Step 5: Solve for x
    x = 1,673,648,814.24/35,661.60
  6. Step 6: Final answer
    x = 46,931.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.