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Finding the Fourth Proportional to 611,784.14, 916,640.60 and 374,631.52

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Solution

The fourth proportional to 611,784.14, 916,640.60 and 374,631.52 is: 561,313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,784.14 : 916,640.60 = 374,631.52 : x
  2. Step 2: Convert to fraction form
    611,784.14/916,640.60 = 374,631.52/x
  3. Step 3: Cross multiply
    611,784.14x = 916,640.60 × 374,631.52
  4. Step 4: Simplify right side
    611,784.14x = 343,402,461,271.71
  5. Step 5: Solve for x
    x = 343,402,461,271.71/611,784.14
  6. Step 6: Final answer
    x = 561,313.11

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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.