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Finding the Fourth Proportional to 528,001.38, 728,647.11 and 286,283.34

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Solution

The fourth proportional to 528,001.38, 728,647.11 and 286,283.34 is: 395,073.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,001.38 : 728,647.11 = 286,283.34 : x
  2. Step 2: Convert to fraction form
    528,001.38/728,647.11 = 286,283.34/x
  3. Step 3: Cross multiply
    528,001.38x = 728,647.11 × 286,283.34
  4. Step 4: Simplify right side
    528,001.38x = 208,599,528,332.15
  5. Step 5: Solve for x
    x = 208,599,528,332.15/528,001.38
  6. Step 6: Final answer
    x = 395,073.83

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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.