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Finding the Fourth Proportional to 48,386.88, 66,748.80 and 30,448.32

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Solution

The fourth proportional to 48,386.88, 66,748.80 and 30,448.32 is: 42,002.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,386.88 : 66,748.80 = 30,448.32 : x
  2. Step 2: Convert to fraction form
    48,386.88/66,748.80 = 30,448.32/x
  3. Step 3: Cross multiply
    48,386.88x = 66,748.80 × 30,448.32
  4. Step 4: Simplify right side
    48,386.88x = 2,032,388,822.02
  5. Step 5: Solve for x
    x = 2,032,388,822.02/48,386.88
  6. Step 6: Final answer
    x = 42,002.89

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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.