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Finding the Fourth Proportional to 623,861.60, 935,792.40 and 545,129.60

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Solution

The fourth proportional to 623,861.60, 935,792.40 and 545,129.60 is: 817,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,861.60 : 935,792.40 = 545,129.60 : x
  2. Step 2: Convert to fraction form
    623,861.60/935,792.40 = 545,129.60/x
  3. Step 3: Cross multiply
    623,861.60x = 935,792.40 × 545,129.60
  4. Step 4: Simplify right side
    623,861.60x = 510,128,136,695.04
  5. Step 5: Solve for x
    x = 510,128,136,695.04/623,861.60
  6. Step 6: Final answer
    x = 817,694.40

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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.