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Finding the Fourth Proportional to 383,316.68, 528,931.14 and 219,964.80

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Solution

The fourth proportional to 383,316.68, 528,931.14 and 219,964.80 is: 303,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,316.68 : 528,931.14 = 219,964.80 : x
  2. Step 2: Convert to fraction form
    383,316.68/528,931.14 = 219,964.80/x
  3. Step 3: Cross multiply
    383,316.68x = 528,931.14 × 219,964.80
  4. Step 4: Simplify right side
    383,316.68x = 116,346,232,423.87
  5. Step 5: Solve for x
    x = 116,346,232,423.87/383,316.68
  6. Step 6: Final answer
    x = 303,525.10

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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.