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Finding the Fourth Proportional to 528,700.76, 729,605.75 and 286,981.22

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Solution

The fourth proportional to 528,700.76, 729,605.75 and 286,981.22 is: 396,033.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,700.76 : 729,605.75 = 286,981.22 : x
  2. Step 2: Convert to fraction form
    528,700.76/729,605.75 = 286,981.22/x
  3. Step 3: Cross multiply
    528,700.76x = 729,605.75 × 286,981.22
  4. Step 4: Simplify right side
    528,700.76x = 209,383,145,934.47
  5. Step 5: Solve for x
    x = 209,383,145,934.47/528,700.76
  6. Step 6: Final answer
    x = 396,033.38

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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.