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Finding the Fourth Proportional to 714,783.56, 986,404.02 and 388,097.08

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Solution

The fourth proportional to 714,783.56, 986,404.02 and 388,097.08 is: 535,575.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,783.56 : 986,404.02 = 388,097.08 : x
  2. Step 2: Convert to fraction form
    714,783.56/986,404.02 = 388,097.08/x
  3. Step 3: Cross multiply
    714,783.56x = 986,404.02 × 388,097.08
  4. Step 4: Simplify right side
    714,783.56x = 382,820,519,862.26
  5. Step 5: Solve for x
    x = 382,820,519,862.26/714,783.56
  6. Step 6: Final answer
    x = 535,575.44

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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.