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Finding the Fourth Proportional to 291,954.40, 402,897.18 and 157,818.40

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Solution

The fourth proportional to 291,954.40, 402,897.18 and 157,818.40 is: 217,789.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,954.40 : 402,897.18 = 157,818.40 : x
  2. Step 2: Convert to fraction form
    291,954.40/402,897.18 = 157,818.40/x
  3. Step 3: Cross multiply
    291,954.40x = 402,897.18 × 157,818.40
  4. Step 4: Simplify right side
    291,954.40x = 63,584,588,312.11
  5. Step 5: Solve for x
    x = 63,584,588,312.11/291,954.40
  6. Step 6: Final answer
    x = 217,789.45

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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.