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Finding the Fourth Proportional to 570,430.76, 786,963.74 and 328,583.79

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Solution

The fourth proportional to 570,430.76, 786,963.74 and 328,583.79 is: 453,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,430.76 : 786,963.74 = 328,583.79 : x
  2. Step 2: Convert to fraction form
    570,430.76/786,963.74 = 328,583.79/x
  3. Step 3: Cross multiply
    570,430.76x = 786,963.74 × 328,583.79
  4. Step 4: Simplify right side
    570,430.76x = 258,583,526,638.86
  5. Step 5: Solve for x
    x = 258,583,526,638.86/570,430.76
  6. Step 6: Final answer
    x = 453,312.74

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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.