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Finding the Fourth Proportional to 77,695.60, 107,192.28 and 45,848.56

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Solution

The fourth proportional to 77,695.60, 107,192.28 and 45,848.56 is: 63,254.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,695.60 : 107,192.28 = 45,848.56 : x
  2. Step 2: Convert to fraction form
    77,695.60/107,192.28 = 45,848.56/x
  3. Step 3: Cross multiply
    77,695.60x = 107,192.28 × 45,848.56
  4. Step 4: Simplify right side
    77,695.60x = 4,914,611,681.12
  5. Step 5: Solve for x
    x = 4,914,611,681.12/77,695.60
  6. Step 6: Final answer
    x = 63,254.70

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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.