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Finding the Fourth Proportional to 439,072.30, 657,624.30 and 360,340.30

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Solution

The fourth proportional to 439,072.30, 657,624.30 and 360,340.30 is: 539,702.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,072.30 : 657,624.30 = 360,340.30 : x
  2. Step 2: Convert to fraction form
    439,072.30/657,624.30 = 360,340.30/x
  3. Step 3: Cross multiply
    439,072.30x = 657,624.30 × 360,340.30
  4. Step 4: Simplify right side
    439,072.30x = 236,968,537,549.29
  5. Step 5: Solve for x
    x = 236,968,537,549.29/439,072.30
  6. Step 6: Final answer
    x = 539,702.77

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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.