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Finding the Fourth Proportional to 623,559.51, 859,938.25 and 408,621.51

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Solution

The fourth proportional to 623,559.51, 859,938.25 and 408,621.51 is: 563,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,559.51 : 859,938.25 = 408,621.51 : x
  2. Step 2: Convert to fraction form
    623,559.51/859,938.25 = 408,621.51/x
  3. Step 3: Cross multiply
    623,559.51x = 859,938.25 × 408,621.51
  4. Step 4: Simplify right side
    623,559.51x = 351,389,266,221.76
  5. Step 5: Solve for x
    x = 351,389,266,221.76/623,559.51
  6. Step 6: Final answer
    x = 563,521.62

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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.