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Finding the Fourth Proportional to 528,673.33, 729,569.91 and 286,955.95

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Solution

The fourth proportional to 528,673.33, 729,569.91 and 286,955.95 is: 395,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,673.33 : 729,569.91 = 286,955.95 : x
  2. Step 2: Convert to fraction form
    528,673.33/729,569.91 = 286,955.95/x
  3. Step 3: Cross multiply
    528,673.33x = 729,569.91 × 286,955.95
  4. Step 4: Simplify right side
    528,673.33x = 209,354,426,615.47
  5. Step 5: Solve for x
    x = 209,354,426,615.47/528,673.33
  6. Step 6: Final answer
    x = 395,999.60

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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.