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Finding the Fourth Proportional to 515,671.52, 711,613.04 and 286,228.16

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Solution

The fourth proportional to 515,671.52, 711,613.04 and 286,228.16 is: 394,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,671.52 : 711,613.04 = 286,228.16 : x
  2. Step 2: Convert to fraction form
    515,671.52/711,613.04 = 286,228.16/x
  3. Step 3: Cross multiply
    515,671.52x = 711,613.04 × 286,228.16
  4. Step 4: Simplify right side
    515,671.52x = 203,683,686,082.00
  5. Step 5: Solve for x
    x = 203,683,686,082.00/515,671.52
  6. Step 6: Final answer
    x = 394,987.27

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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.