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Finding the Fourth Proportional to 528,680.60, 729,559.53 and 286,957.97

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Solution

The fourth proportional to 528,680.60, 729,559.53 and 286,957.97 is: 395,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,680.60 : 729,559.53 = 286,957.97 : x
  2. Step 2: Convert to fraction form
    528,680.60/729,559.53 = 286,957.97/x
  3. Step 3: Cross multiply
    528,680.60x = 729,559.53 × 286,957.97
  4. Step 4: Simplify right side
    528,680.60x = 209,352,918,075.16
  5. Step 5: Solve for x
    x = 209,352,918,075.16/528,680.60
  6. Step 6: Final answer
    x = 395,991.30

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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.