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Finding the Fourth Proportional to 84,877.90, 117,131.28 and 46,631.32

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Solution

The fourth proportional to 84,877.90, 117,131.28 and 46,631.32 is: 64,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,877.90 : 117,131.28 = 46,631.32 : x
  2. Step 2: Convert to fraction form
    84,877.90/117,131.28 = 46,631.32/x
  3. Step 3: Cross multiply
    84,877.90x = 117,131.28 × 46,631.32
  4. Step 4: Simplify right side
    84,877.90x = 5,461,986,199.69
  5. Step 5: Solve for x
    x = 5,461,986,199.69/84,877.90
  6. Step 6: Final answer
    x = 64,351.10

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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.