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Finding the Fourth Proportional to 369,089.21, 553,436.97 and 191,154.89

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Solution

The fourth proportional to 369,089.21, 553,436.97 and 191,154.89 is: 286,630.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,089.21 : 553,436.97 = 191,154.89 : x
  2. Step 2: Convert to fraction form
    369,089.21/553,436.97 = 191,154.89/x
  3. Step 3: Cross multiply
    369,089.21x = 553,436.97 × 191,154.89
  4. Step 4: Simplify right side
    369,089.21x = 105,792,180,355.10
  5. Step 5: Solve for x
    x = 105,792,180,355.10/369,089.21
  6. Step 6: Final answer
    x = 286,630.38

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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.