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Finding the Fourth Proportional to 145,595.99, 218,395.20 and 40,423.16

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Solution

The fourth proportional to 145,595.99, 218,395.20 and 40,423.16 is: 60,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,595.99 : 218,395.20 = 40,423.16 : x
  2. Step 2: Convert to fraction form
    145,595.99/218,395.20 = 40,423.16/x
  3. Step 3: Cross multiply
    145,595.99x = 218,395.20 × 40,423.16
  4. Step 4: Simplify right side
    145,595.99x = 8,828,223,020.86
  5. Step 5: Solve for x
    x = 8,828,223,020.86/145,595.99
  6. Step 6: Final answer
    x = 60,635.07

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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.