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Finding the Fourth Proportional to 89,970.51, 134,875.55 and 45,574.41

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Solution

The fourth proportional to 89,970.51, 134,875.55 and 45,574.41 is: 68,320.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,970.51 : 134,875.55 = 45,574.41 : x
  2. Step 2: Convert to fraction form
    89,970.51/134,875.55 = 45,574.41/x
  3. Step 3: Cross multiply
    89,970.51x = 134,875.55 × 45,574.41
  4. Step 4: Simplify right side
    89,970.51x = 6,146,873,222.83
  5. Step 5: Solve for x
    x = 6,146,873,222.83/89,970.51
  6. Step 6: Final answer
    x = 68,320.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.