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Finding the Fourth Proportional to 528,633.28, 729,495.40 and 286,911.01

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Solution

The fourth proportional to 528,633.28, 729,495.40 and 286,911.01 is: 395,927.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,633.28 : 729,495.40 = 286,911.01 : x
  2. Step 2: Convert to fraction form
    528,633.28/729,495.40 = 286,911.01/x
  3. Step 3: Cross multiply
    528,633.28x = 729,495.40 × 286,911.01
  4. Step 4: Simplify right side
    528,633.28x = 209,300,256,922.32
  5. Step 5: Solve for x
    x = 209,300,256,922.32/528,633.28
  6. Step 6: Final answer
    x = 395,927.13

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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.