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Finding the Fourth Proportional to 674,691.53, 931,109.00 and 388,254.47

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Solution

The fourth proportional to 674,691.53, 931,109.00 and 388,254.47 is: 535,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,691.53 : 931,109.00 = 388,254.47 : x
  2. Step 2: Convert to fraction form
    674,691.53/931,109.00 = 388,254.47/x
  3. Step 3: Cross multiply
    674,691.53x = 931,109.00 × 388,254.47
  4. Step 4: Simplify right side
    674,691.53x = 361,507,224,710.41
  5. Step 5: Solve for x
    x = 361,507,224,710.41/674,691.53
  6. Step 6: Final answer
    x = 535,811.12

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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.