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Finding the Fourth Proportional to 528,101.66, 728,773.89 and 286,381.32

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Solution

The fourth proportional to 528,101.66, 728,773.89 and 286,381.32 is: 395,202.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,101.66 : 728,773.89 = 286,381.32 : x
  2. Step 2: Convert to fraction form
    528,101.66/728,773.89 = 286,381.32/x
  3. Step 3: Cross multiply
    528,101.66x = 728,773.89 × 286,381.32
  4. Step 4: Simplify right side
    528,101.66x = 208,707,228,599.74
  5. Step 5: Solve for x
    x = 208,707,228,599.74/528,101.66
  6. Step 6: Final answer
    x = 395,202.75

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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.