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Finding the Fourth Proportional to 911,532.18, 1,257,907.02 and 503,632.74

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Solution

The fourth proportional to 911,532.18, 1,257,907.02 and 503,632.74 is: 695,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,532.18 : 1,257,907.02 = 503,632.74 : x
  2. Step 2: Convert to fraction form
    911,532.18/1,257,907.02 = 503,632.74/x
  3. Step 3: Cross multiply
    911,532.18x = 1,257,907.02 × 503,632.74
  4. Step 4: Simplify right side
    911,532.18x = 633,523,159,147.84
  5. Step 5: Solve for x
    x = 633,523,159,147.84/911,532.18
  6. Step 6: Final answer
    x = 695,009.10

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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.