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Finding the Fourth Proportional to 284,281.01, 392,305.16 and 156,957.51

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Solution

The fourth proportional to 284,281.01, 392,305.16 and 156,957.51 is: 216,599.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,281.01 : 392,305.16 = 156,957.51 : x
  2. Step 2: Convert to fraction form
    284,281.01/392,305.16 = 156,957.51/x
  3. Step 3: Cross multiply
    284,281.01x = 392,305.16 × 156,957.51
  4. Step 4: Simplify right side
    284,281.01x = 61,575,240,288.96
  5. Step 5: Solve for x
    x = 61,575,240,288.96/284,281.01
  6. Step 6: Final answer
    x = 216,599.91

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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.