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Finding the Fourth Proportional to 556,783.38, 768,363.12 and 302,134.53

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Solution

The fourth proportional to 556,783.38, 768,363.12 and 302,134.53 is: 416,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,783.38 : 768,363.12 = 302,134.53 : x
  2. Step 2: Convert to fraction form
    556,783.38/768,363.12 = 302,134.53/x
  3. Step 3: Cross multiply
    556,783.38x = 768,363.12 × 302,134.53
  4. Step 4: Simplify right side
    556,783.38x = 232,149,030,130.53
  5. Step 5: Solve for x
    x = 232,149,030,130.53/556,783.38
  6. Step 6: Final answer
    x = 416,946.77

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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.