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Finding the Fourth Proportional to 658,792.17, 909,133.11 and 356,986.17

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Solution

The fourth proportional to 658,792.17, 909,133.11 and 356,986.17 is: 492,640.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,792.17 : 909,133.11 = 356,986.17 : x
  2. Step 2: Convert to fraction form
    658,792.17/909,133.11 = 356,986.17/x
  3. Step 3: Cross multiply
    658,792.17x = 909,133.11 × 356,986.17
  4. Step 4: Simplify right side
    658,792.17x = 324,547,946,959.09
  5. Step 5: Solve for x
    x = 324,547,946,959.09/658,792.17
  6. Step 6: Final answer
    x = 492,640.87

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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.