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Finding the Fourth Proportional to 528,050.16, 728,710.92 and 286,332.56

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Solution

The fourth proportional to 528,050.16, 728,710.92 and 286,332.56 is: 395,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,050.16 : 728,710.92 = 286,332.56 : x
  2. Step 2: Convert to fraction form
    528,050.16/728,710.92 = 286,332.56/x
  3. Step 3: Cross multiply
    528,050.16x = 728,710.92 × 286,332.56
  4. Step 4: Simplify right side
    528,050.16x = 208,653,663,223.56
  5. Step 5: Solve for x
    x = 208,653,663,223.56/528,050.16
  6. Step 6: Final answer
    x = 395,139.85

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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.