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Finding the Fourth Proportional to 877,333.73, 1,210,728.90 and 514,763.76

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Solution

The fourth proportional to 877,333.73, 1,210,728.90 and 514,763.76 is: 710,378.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,333.73 : 1,210,728.90 = 514,763.76 : x
  2. Step 2: Convert to fraction form
    877,333.73/1,210,728.90 = 514,763.76/x
  3. Step 3: Cross multiply
    877,333.73x = 1,210,728.90 × 514,763.76
  4. Step 4: Simplify right side
    877,333.73x = 623,239,356,221.59
  5. Step 5: Solve for x
    x = 623,239,356,221.59/877,333.73
  6. Step 6: Final answer
    x = 710,378.88

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Double scale
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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.