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Finding the Fourth Proportional to 614,200.05, 921,300.08 and 561,055.95

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Solution

The fourth proportional to 614,200.05, 921,300.08 and 561,055.95 is: 841,583.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,200.05 : 921,300.08 = 561,055.95 : x
  2. Step 2: Convert to fraction form
    614,200.05/921,300.08 = 561,055.95/x
  3. Step 3: Cross multiply
    614,200.05x = 921,300.08 × 561,055.95
  4. Step 4: Simplify right side
    614,200.05x = 516,900,888,814.20
  5. Step 5: Solve for x
    x = 516,900,888,814.20/614,200.05
  6. Step 6: Final answer
    x = 841,583.93

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Double scale
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Similar ratio
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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.