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Finding the Fourth Proportional to 556,777.19, 768,354.56 and 302,128.37

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Solution

The fourth proportional to 556,777.19, 768,354.56 and 302,128.37 is: 416,938.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,777.19 : 768,354.56 = 302,128.37 : x
  2. Step 2: Convert to fraction form
    556,777.19/768,354.56 = 302,128.37/x
  3. Step 3: Cross multiply
    556,777.19x = 768,354.56 × 302,128.37
  4. Step 4: Simplify right side
    556,777.19x = 232,141,705,442.45
  5. Step 5: Solve for x
    x = 232,141,705,442.45/556,777.19
  6. Step 6: Final answer
    x = 416,938.25

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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.