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Finding the Fourth Proportional to 567,420.49, 783,095.45 and 423,931.42

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Solution

The fourth proportional to 567,420.49, 783,095.45 and 423,931.42 is: 585,066.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,420.49 : 783,095.45 = 423,931.42 : x
  2. Step 2: Convert to fraction form
    567,420.49/783,095.45 = 423,931.42/x
  3. Step 3: Cross multiply
    567,420.49x = 783,095.45 × 423,931.42
  4. Step 4: Simplify right side
    567,420.49x = 331,978,764,973.25
  5. Step 5: Solve for x
    x = 331,978,764,973.25/567,420.49
  6. Step 6: Final answer
    x = 585,066.58

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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.