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Finding the Fourth Proportional to 374,421.40, 561,632.10 and 216,957.40

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Solution

The fourth proportional to 374,421.40, 561,632.10 and 216,957.40 is: 325,436.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,421.40 : 561,632.10 = 216,957.40 : x
  2. Step 2: Convert to fraction form
    374,421.40/561,632.10 = 216,957.40/x
  3. Step 3: Cross multiply
    374,421.40x = 561,632.10 × 216,957.40
  4. Step 4: Simplify right side
    374,421.40x = 121,850,240,172.54
  5. Step 5: Solve for x
    x = 121,850,240,172.54/374,421.40
  6. Step 6: Final answer
    x = 325,436.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.