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Finding the Fourth Proportional to 633,430.89, 874,134.90 and 346,955.76

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Solution

The fourth proportional to 633,430.89, 874,134.90 and 346,955.76 is: 478,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,430.89 : 874,134.90 = 346,955.76 : x
  2. Step 2: Convert to fraction form
    633,430.89/874,134.90 = 346,955.76/x
  3. Step 3: Cross multiply
    633,430.89x = 874,134.90 × 346,955.76
  4. Step 4: Simplify right side
    633,430.89x = 303,286,138,572.02
  5. Step 5: Solve for x
    x = 303,286,138,572.02/633,430.89
  6. Step 6: Final answer
    x = 478,799.10

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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.