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Finding the Fourth Proportional to 633,196.80, 873,811.20 and 378,547.20

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Solution

The fourth proportional to 633,196.80, 873,811.20 and 378,547.20 is: 522,394.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,196.80 : 873,811.20 = 378,547.20 : x
  2. Step 2: Convert to fraction form
    633,196.80/873,811.20 = 378,547.20/x
  3. Step 3: Cross multiply
    633,196.80x = 873,811.20 × 378,547.20
  4. Step 4: Simplify right side
    633,196.80x = 330,778,783,088.64
  5. Step 5: Solve for x
    x = 330,778,783,088.64/633,196.80
  6. Step 6: Final answer
    x = 522,394.91

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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.