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Finding the Fourth Proportional to 328,095.60, 492,082.65 and 91,389.30

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Solution

The fourth proportional to 328,095.60, 492,082.65 and 91,389.30 is: 137,067.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,095.60 : 492,082.65 = 91,389.30 : x
  2. Step 2: Convert to fraction form
    328,095.60/492,082.65 = 91,389.30/x
  3. Step 3: Cross multiply
    328,095.60x = 492,082.65 × 91,389.30
  4. Step 4: Simplify right side
    328,095.60x = 44,971,088,925.65
  5. Step 5: Solve for x
    x = 44,971,088,925.65/328,095.60
  6. Step 6: Final answer
    x = 137,067.03

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1.5x scale

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.