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Finding the Fourth Proportional to 894,430.16, 1,234,313.16 and 492,019.28

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Solution

The fourth proportional to 894,430.16, 1,234,313.16 and 492,019.28 is: 678,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    894,430.16 : 1,234,313.16 = 492,019.28 : x
  2. Step 2: Convert to fraction form
    894,430.16/1,234,313.16 = 492,019.28/x
  3. Step 3: Cross multiply
    894,430.16x = 1,234,313.16 × 492,019.28
  4. Step 4: Simplify right side
    894,430.16x = 607,305,872,277.73
  5. Step 5: Solve for x
    x = 607,305,872,277.73/894,430.16
  6. Step 6: Final answer
    x = 678,986.35

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Double scale
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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.