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Finding the Fourth Proportional to 289,349.99, 399,298.61 and 162,030.14

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Solution

The fourth proportional to 289,349.99, 399,298.61 and 162,030.14 is: 223,599.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,349.99 : 399,298.61 = 162,030.14 : x
  2. Step 2: Convert to fraction form
    289,349.99/399,298.61 = 162,030.14/x
  3. Step 3: Cross multiply
    289,349.99x = 399,298.61 × 162,030.14
  4. Step 4: Simplify right side
    289,349.99x = 64,698,409,680.11
  5. Step 5: Solve for x
    x = 64,698,409,680.11/289,349.99
  6. Step 6: Final answer
    x = 223,599.14

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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.