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Finding the Fourth Proportional to 251,970.01, 347,718.64 and 138,792.76

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Solution

The fourth proportional to 251,970.01, 347,718.64 and 138,792.76 is: 191,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,970.01 : 347,718.64 = 138,792.76 : x
  2. Step 2: Convert to fraction form
    251,970.01/347,718.64 = 138,792.76/x
  3. Step 3: Cross multiply
    251,970.01x = 347,718.64 × 138,792.76
  4. Step 4: Simplify right side
    251,970.01x = 48,260,828,793.00
  5. Step 5: Solve for x
    x = 48,260,828,793.00/251,970.01
  6. Step 6: Final answer
    x = 191,534.02

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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.