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Finding the Fourth Proportional to 439,085.40, 657,072.90 and 299,117.40

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Solution

The fourth proportional to 439,085.40, 657,072.90 and 299,117.40 is: 447,616.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,085.40 : 657,072.90 = 299,117.40 : x
  2. Step 2: Convert to fraction form
    439,085.40/657,072.90 = 299,117.40/x
  3. Step 3: Cross multiply
    439,085.40x = 657,072.90 × 299,117.40
  4. Step 4: Simplify right side
    439,085.40x = 196,541,937,458.46
  5. Step 5: Solve for x
    x = 196,541,937,458.46/439,085.40
  6. Step 6: Final answer
    x = 447,616.65

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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.