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Finding the Fourth Proportional to 528,166.98, 728,868.33 and 286,448.58

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Solution

The fourth proportional to 528,166.98, 728,868.33 and 286,448.58 is: 395,297.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,166.98 : 728,868.33 = 286,448.58 : x
  2. Step 2: Convert to fraction form
    528,166.98/728,868.33 = 286,448.58/x
  3. Step 3: Cross multiply
    528,166.98x = 728,868.33 × 286,448.58
  4. Step 4: Simplify right side
    528,166.98x = 208,783,298,135.47
  5. Step 5: Solve for x
    x = 208,783,298,135.47/528,166.98
  6. Step 6: Final answer
    x = 395,297.90

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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.