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Finding the Fourth Proportional to 528,657.38, 729,547.94 and 286,940.02

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Solution

The fourth proportional to 528,657.38, 729,547.94 and 286,940.02 is: 395,977.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,657.38 : 729,547.94 = 286,940.02 : x
  2. Step 2: Convert to fraction form
    528,657.38/729,547.94 = 286,940.02/x
  3. Step 3: Cross multiply
    528,657.38x = 729,547.94 × 286,940.02
  4. Step 4: Simplify right side
    528,657.38x = 209,336,495,412.12
  5. Step 5: Solve for x
    x = 209,336,495,412.12/528,657.38
  6. Step 6: Final answer
    x = 395,977.63

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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.