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Finding the Fourth Proportional to 319,643.72, 441,114.48 and 176,400.69

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Solution

The fourth proportional to 319,643.72, 441,114.48 and 176,400.69 is: 243,436.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,643.72 : 441,114.48 = 176,400.69 : x
  2. Step 2: Convert to fraction form
    319,643.72/441,114.48 = 176,400.69/x
  3. Step 3: Cross multiply
    319,643.72x = 441,114.48 × 176,400.69
  4. Step 4: Simplify right side
    319,643.72x = 77,812,897,482.94
  5. Step 5: Solve for x
    x = 77,812,897,482.94/319,643.72
  6. Step 6: Final answer
    x = 243,436.34

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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.