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Finding the Fourth Proportional to 447,152.40, 617,068.80 and 256,165.20

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Solution

The fourth proportional to 447,152.40, 617,068.80 and 256,165.20 is: 353,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,152.40 : 617,068.80 = 256,165.20 : x
  2. Step 2: Convert to fraction form
    447,152.40/617,068.80 = 256,165.20/x
  3. Step 3: Cross multiply
    447,152.40x = 617,068.80 × 256,165.20
  4. Step 4: Simplify right side
    447,152.40x = 158,071,552,565.76
  5. Step 5: Solve for x
    x = 158,071,552,565.76/447,152.40
  6. Step 6: Final answer
    x = 353,507.11

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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.