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Finding the Fourth Proportional to 528,909.89, 729,792.99 and 314,117.33

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Solution

The fourth proportional to 528,909.89, 729,792.99 and 314,117.33 is: 433,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,909.89 : 729,792.99 = 314,117.33 : x
  2. Step 2: Convert to fraction form
    528,909.89/729,792.99 = 314,117.33/x
  3. Step 3: Cross multiply
    528,909.89x = 729,792.99 × 314,117.33
  4. Step 4: Simplify right side
    528,909.89x = 229,240,625,471.52
  5. Step 5: Solve for x
    x = 229,240,625,471.52/528,909.89
  6. Step 6: Final answer
    x = 433,420.95

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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.