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Finding the Fourth Proportional to 60,572.88, 90,833.40 and 21,118.32

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Solution

The fourth proportional to 60,572.88, 90,833.40 and 21,118.32 is: 31,668.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,572.88 : 90,833.40 = 21,118.32 : x
  2. Step 2: Convert to fraction form
    60,572.88/90,833.40 = 21,118.32/x
  3. Step 3: Cross multiply
    60,572.88x = 90,833.40 × 21,118.32
  4. Step 4: Simplify right side
    60,572.88x = 1,918,248,807.89
  5. Step 5: Solve for x
    x = 1,918,248,807.89/60,572.88
  6. Step 6: Final answer
    x = 31,668.44

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1.5x scale

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.