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Finding the Fourth Proportional to 528,642.90, 792,957.45 and 129,287.13

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Solution

The fourth proportional to 528,642.90, 792,957.45 and 129,287.13 is: 193,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,642.90 : 792,957.45 = 129,287.13 : x
  2. Step 2: Convert to fraction form
    528,642.90/792,957.45 = 129,287.13/x
  3. Step 3: Cross multiply
    528,642.90x = 792,957.45 × 129,287.13
  4. Step 4: Simplify right side
    528,642.90x = 102,519,192,922.62
  5. Step 5: Solve for x
    x = 102,519,192,922.62/528,642.90
  6. Step 6: Final answer
    x = 193,929.01

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1.5x scale

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.