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Finding the Fourth Proportional to 528,659, 729,547.62 and 286,941.56

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Solution

The fourth proportional to 528,659, 729,547.62 and 286,941.56 is: 395,978.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,659 : 729,547.62 = 286,941.56 : x
  2. Step 2: Convert to fraction form
    528,659/729,547.62 = 286,941.56/x
  3. Step 3: Cross multiply
    528,659x = 729,547.62 × 286,941.56
  4. Step 4: Simplify right side
    528,659x = 209,337,532,177.09
  5. Step 5: Solve for x
    x = 209,337,532,177.09/528,659
  6. Step 6: Final answer
    x = 395,978.38

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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.