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Finding the Fourth Proportional to 633,593.19, 874,390.11 and 392,001.51

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Solution

The fourth proportional to 633,593.19, 874,390.11 and 392,001.51 is: 540,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,593.19 : 874,390.11 = 392,001.51 : x
  2. Step 2: Convert to fraction form
    633,593.19/874,390.11 = 392,001.51/x
  3. Step 3: Cross multiply
    633,593.19x = 874,390.11 × 392,001.51
  4. Step 4: Simplify right side
    633,593.19x = 342,762,243,449.07
  5. Step 5: Solve for x
    x = 342,762,243,449.07/633,593.19
  6. Step 6: Final answer
    x = 540,981.58

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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.