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Finding the Fourth Proportional to 289,658,562.20, 434,991,728.10 and 153,609,666.20

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Solution

The fourth proportional to 289,658,562.20, 434,991,728.10 and 153,609,666.20 is: 230,681,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,658,562.20 : 434,991,728.10 = 153,609,666.20 : x
  2. Step 2: Convert to fraction form
    289,658,562.20/434,991,728.10 = 153,609,666.20/x
  3. Step 3: Cross multiply
    289,658,562.20x = 434,991,728.10 × 153,609,666.20
  4. Step 4: Simplify right side
    289,658,562.20x = 66,818,934,153,202,160
  5. Step 5: Solve for x
    x = 66,818,934,153,202,160/289,658,562.20
  6. Step 6: Final answer
    x = 230,681,715.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.