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Finding the Fourth Proportional to 110,965.64, 153,124.70 and 63,210.20

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Solution

The fourth proportional to 110,965.64, 153,124.70 and 63,210.20 is: 87,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,965.64 : 153,124.70 = 63,210.20 : x
  2. Step 2: Convert to fraction form
    110,965.64/153,124.70 = 63,210.20/x
  3. Step 3: Cross multiply
    110,965.64x = 153,124.70 × 63,210.20
  4. Step 4: Simplify right side
    110,965.64x = 9,679,042,911.94
  5. Step 5: Solve for x
    x = 9,679,042,911.94/110,965.64
  6. Step 6: Final answer
    x = 87,225.59

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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.