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Finding the Fourth Proportional to 528,556.80, 793,054.08 and 291,878.40

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Solution

The fourth proportional to 528,556.80, 793,054.08 and 291,878.40 is: 437,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,556.80 : 793,054.08 = 291,878.40 : x
  2. Step 2: Convert to fraction form
    528,556.80/793,054.08 = 291,878.40/x
  3. Step 3: Cross multiply
    528,556.80x = 793,054.08 × 291,878.40
  4. Step 4: Simplify right side
    528,556.80x = 231,475,355,983.87
  5. Step 5: Solve for x
    x = 231,475,355,983.87/528,556.80
  6. Step 6: Final answer
    x = 437,938.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.