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Finding the Fourth Proportional to 665,191.02, 997,792 and 286,085.51

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Solution

The fourth proportional to 665,191.02, 997,792 and 286,085.51 is: 429,130.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,191.02 : 997,792 = 286,085.51 : x
  2. Step 2: Convert to fraction form
    665,191.02/997,792 = 286,085.51/x
  3. Step 3: Cross multiply
    665,191.02x = 997,792 × 286,085.51
  4. Step 4: Simplify right side
    665,191.02x = 285,453,833,193.92
  5. Step 5: Solve for x
    x = 285,453,833,193.92/665,191.02
  6. Step 6: Final answer
    x = 429,130.62

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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.