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Finding the Fourth Proportional to 326,159.15, 489,216.72 and 89,482.01

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Solution

The fourth proportional to 326,159.15, 489,216.72 and 89,482.01 is: 134,216.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,159.15 : 489,216.72 = 89,482.01 : x
  2. Step 2: Convert to fraction form
    326,159.15/489,216.72 = 89,482.01/x
  3. Step 3: Cross multiply
    326,159.15x = 489,216.72 × 89,482.01
  4. Step 4: Simplify right side
    326,159.15x = 43,776,095,431.21
  5. Step 5: Solve for x
    x = 43,776,095,431.21/326,159.15
  6. Step 6: Final answer
    x = 134,216.98

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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.