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Finding the Fourth Proportional to 284,065.32, 392,009.85 and 156,740.91

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Solution

The fourth proportional to 284,065.32, 392,009.85 and 156,740.91 is: 216,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,065.32 : 392,009.85 = 156,740.91 : x
  2. Step 2: Convert to fraction form
    284,065.32/392,009.85 = 156,740.91/x
  3. Step 3: Cross multiply
    284,065.32x = 392,009.85 × 156,740.91
  4. Step 4: Simplify right side
    284,065.32x = 61,443,980,617.96
  5. Step 5: Solve for x
    x = 61,443,980,617.96/284,065.32
  6. Step 6: Final answer
    x = 216,302.29

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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.