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Finding the Fourth Proportional to 284,218.77, 392,221.51 and 156,894.06

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Solution

The fourth proportional to 284,218.77, 392,221.51 and 156,894.06 is: 216,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,218.77 : 392,221.51 = 156,894.06 : x
  2. Step 2: Convert to fraction form
    284,218.77/392,221.51 = 156,894.06/x
  3. Step 3: Cross multiply
    284,218.77x = 392,221.51 × 156,894.06
  4. Step 4: Simplify right side
    284,218.77x = 61,537,225,123.23
  5. Step 5: Solve for x
    x = 61,537,225,123.23/284,218.77
  6. Step 6: Final answer
    x = 216,513.59

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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.