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Finding the Fourth Proportional to 251,830.76, 347,526.52 and 138,653.51

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Solution

The fourth proportional to 251,830.76, 347,526.52 and 138,653.51 is: 191,341.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,830.76 : 347,526.52 = 138,653.51 : x
  2. Step 2: Convert to fraction form
    251,830.76/347,526.52 = 138,653.51/x
  3. Step 3: Cross multiply
    251,830.76x = 347,526.52 × 138,653.51
  4. Step 4: Simplify right side
    251,830.76x = 48,185,769,731.82
  5. Step 5: Solve for x
    x = 48,185,769,731.82/251,830.76
  6. Step 6: Final answer
    x = 191,341.88

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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.