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Finding the Fourth Proportional to 535,007.68, 738,307.88 and 289,991.45

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Solution

The fourth proportional to 535,007.68, 738,307.88 and 289,991.45 is: 400,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,007.68 : 738,307.88 = 289,991.45 : x
  2. Step 2: Convert to fraction form
    535,007.68/738,307.88 = 289,991.45/x
  3. Step 3: Cross multiply
    535,007.68x = 738,307.88 × 289,991.45
  4. Step 4: Simplify right side
    535,007.68x = 214,102,967,526.13
  5. Step 5: Solve for x
    x = 214,102,967,526.13/535,007.68
  6. Step 6: Final answer
    x = 400,186.72

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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.