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Finding the Fourth Proportional to 518,434.02, 715,530.51 and 411,817.77

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Solution

The fourth proportional to 518,434.02, 715,530.51 and 411,817.77 is: 568,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,434.02 : 715,530.51 = 411,817.77 : x
  2. Step 2: Convert to fraction form
    518,434.02/715,530.51 = 411,817.77/x
  3. Step 3: Cross multiply
    518,434.02x = 715,530.51 × 411,817.77
  4. Step 4: Simplify right side
    518,434.02x = 294,668,178,995.16
  5. Step 5: Solve for x
    x = 294,668,178,995.16/518,434.02
  6. Step 6: Final answer
    x = 568,381.26

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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.