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Finding the Fourth Proportional to 88,987.32, 122,790.63 and 51,254.28

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Solution

The fourth proportional to 88,987.32, 122,790.63 and 51,254.28 is: 70,724.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,987.32 : 122,790.63 = 51,254.28 : x
  2. Step 2: Convert to fraction form
    88,987.32/122,790.63 = 51,254.28/x
  3. Step 3: Cross multiply
    88,987.32x = 122,790.63 × 51,254.28
  4. Step 4: Simplify right side
    88,987.32x = 6,293,545,331.40
  5. Step 5: Solve for x
    x = 6,293,545,331.40/88,987.32
  6. Step 6: Final answer
    x = 70,724.07

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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.